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Old 10-17-2013, 11:05 PM   #1
Strutton
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Default Compressor surge??

Just installed a Cobb sf intake on my 2011 wrx. Did the tune and when I tried launch control for a quick sound clip after I let off the gas it sounded like compressor surge, or a turbo flutter sound. Any ideas?
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Old 10-17-2013, 11:07 PM   #2
Psychoreo
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It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....
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Old 10-17-2013, 11:08 PM   #3
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Quote:
Originally Posted by Psychoreo View Post
It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....It's your bypass valve............................................. .................................................. .................................................. ....
elaborate
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Old 10-17-2013, 11:09 PM   #4
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What are your mods? Your best bet is to post up a log of the condition. Depending on the quality of your gaskets it could be that a a gasket is gone. Most likely a Down pipe.
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Old 10-17-2013, 11:11 PM   #5
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3" invidia catless down pipe, Cobb sf intake, Cobb access port stage 2 91 octane tune . Got new gaskets when I installed my down pipe around 3k miles ago
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Old 10-17-2013, 11:15 PM   #6
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Quote:
Originally Posted by Strutton View Post
elaborate
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
It's normal and has always made that sound, you just couldn't hear it until you put on your intake............................................ .......................................
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Old 10-17-2013, 11:20 PM   #7
Strutton
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So nothing to worry about?
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Old 10-17-2013, 11:27 PM   #8
Psychoreo
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Quote:
Originally Posted by Strutton View Post
So nothing to worry about?
Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........Nope.................................... .................................................. ...............Nope............................... .................................................. ....................Nope.......................... .................................................. .........................Nope..................... .................................................. ..............................Nope................ .................................................. ...................................Nope........... .................................................. ........................................Nope...... .................................................. .............................................Nope. .................................................. .................................................. Nope.............................................. .................................................. .....Nope......................................... .................................................. ..........
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Old 10-17-2013, 11:30 PM   #9
Ryan321
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Do not worry about the asshats who come to comment on the thread. Post some the dalogs then we can get a further assessment of what your car is doing
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Old 10-17-2013, 11:33 PM   #10
Psychoreo
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Quote:
Originally Posted by Ryan321 View Post
Do not worry about the asshats who come to comment on the thread. Post some the dalogs then we can get a further assessment of what your car is doing
Except this asshat is right. Just installed an intake. Notices new noise when letting off the throttle. It's the bypass valve doing it's job. As has been said over and over and over when this question comes up over and over and over.
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Old 10-17-2013, 11:34 PM   #11
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Quote:
Originally Posted by Psychoreo View Post
Except this asshat is right. Just installed an intake. Notices new noise when letting off the throttle. It's the bypass valve doing it's job. As has been said over and over and over when this question comes up over and over and over.
it's not the normal woosh, it sounds more like turbo flutter
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Old 10-17-2013, 11:38 PM   #12
Psychoreo
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Quote:
Originally Posted by Strutton View Post
it's not the normal woosh, it sounds more like turbo flutter
If it kind of goes "choo choo choo choo," especially at low boost, then the valve may not be opening quickly enough. However, it still is nothing to worry about. If at high boost, make sure the vacuum lines are connected to it/not damaged.
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Old 10-18-2013, 07:27 AM   #13
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As said above make sure everything is tight.
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Old 10-19-2013, 12:43 AM   #14
my name is joe
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If you have any of these buses around your area and it sounds like the choo choo choo then you have a problem. These mofo buses surge all the time
No its not an electric only bus.



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Old 10-23-2013, 08:30 AM   #15
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Could also be waste gate flutter that you hear now due to intake allowing the sound to resonate out more.

But seriously, its not compressor surge if your BPV is operating as it should.
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