|
|
|
|
Thread Tools | Display Modes |
03-11-2007, 10:20 PM | #1 |
Scooby Specialist
Member#: 130288
Join Date: Oct 2006
Chapter/Region:
MWSOC
Location: Chicago/land
|
just installed a up/dp and the car is acting strange!! help!
i just installed an invidia catless bellmouth and a helix flex up pipe. i went out for a test drive and im having a few problems. when i press the gas down half a centimeter or so, theres a thundering/ratteling/sputtering/thumping sound that i can even feel coming from around the turbo area. this happens when i first let go of the gas also. the turbo spool is obnoxiously loud at all rpms except when idle. the turbos seems to kick in at 2200 rpm, BUT then it does out at 4000 rpm.. wtf?? all the gauges are fine. even the boost gauge. the car runs normally if i shift before 4k rpm except for when it makes that thumping sound. i havent gotten any CELs yet. anyone have any ideas?? help would really be appreciated!!!
* Registered users of the site do not see these ads.
|
03-11-2007, 10:55 PM | #2 |
Scooby Newbie
Member#: 100391
Join Date: Nov 2005
Location: Humboldt, CA...
Vehicle:2004 WRX sportwagon chipped and dented white |
Do you have engine management?
|
03-11-2007, 11:06 PM | #3 |
Scooby Specialist
Member#: 111256
Join Date: Mar 2006
Chapter/Region:
SWIC
Location: The land of R-tards, AZ
Vehicle:1992 Legacy Turbo don't call me white... |
You might have installed them incorrectly and have an exhaust leak. Make sure you used the correct gaskets in the correct places, and that your bolts are tightened down.
|
03-11-2007, 11:07 PM | #4 |
Scooby Newbie
Member#: 63477
Join Date: Jun 2004
Chapter/Region:
NESIC
Location: CT Shoreline
Vehicle:04 WRX Wagon San Remo Red |
While I'm not going to bash the engine management idea, I think his problems sound worse than a lack of engine management. I'd guess he has a major leak going on there. Did you reuse the gaskets? Did you torque everything to spec? Do you have a BOV or CAI?
Also, after market downpipe makes the turbo spool sound very audible, even when using a catted downpipe. Is it a quiet whine or is it very loud inside and outside of the car? |
03-11-2007, 11:24 PM | #5 |
Scooby Specialist
Member#: 68709
Join Date: Aug 2004
Chapter/Region:
AKIC
Location: Kenai Peninsula, AK
Vehicle:2012 WRX red |
Not enough info. What does boost do, exactly? You mentioned a problem at 4000rpm, what is happening with boost before and after that point? Does it spike to higher levels than before? Does it fluctuate?
As someone already said, you will definitely hear the turbo more, but the shuddering/thumping/rattling is not normal. Did you use new gaskets? What torques did you use on the UP and DP bolts? |
03-12-2007, 07:59 AM | #6 |
Scooby Specialist
Member#: 130288
Join Date: Oct 2006
Chapter/Region:
MWSOC
Location: Chicago/land
|
i remember putting all of the bolts back, but i didnt use a torque wrench. i tightened them all by feeling to about how they were before. all of the gaskets are new. i had to make my own temporary gastket for between the dp and catback. its a 1 inch thick aluminum gasket lol. but there isnt a problem in that area. the boost gauge reads fine.. normal driving is also fine.. it was just as it was before i put these things on the car. everything else is completely stock. when i punch the gas the turbo kicks in at around 2200 rpm and its "turboing" up to about 4000 rpm. then it suddenly dramatically slow down and accelerates very slowly. ..as if there was no back pressure at all. and yes turbo spool can be heard inside and outside the car with windows up and windows down. it sounds like a semi truck really. well actually, ive heard a big fat obnoxious turbo in person once in my life, but im pretty sure its the turbo making that spool.
|
03-12-2007, 08:08 AM | #7 |
Scooby Specialist
Member#: 44422
Join Date: Sep 2003
Chapter/Region:
SWIC
Location: Gilbert, AZ
Vehicle:2009 G8 GT Cammed, sprayed, stalled |
With the Invidia dp, did you secure it to the transmission where the stock was? Perhaps under load the dp is shifting around and making a racket of noise.
|
03-12-2007, 09:32 AM | #8 | |
Scooby Specialist
Member#: 66235
Join Date: Jul 2004
Chapter/Region:
Tri-State
Location: South Carolina !
Vehicle:2005 WRX Silver |
Quote:
|
|
03-12-2007, 10:26 AM | #9 |
Scooby Specialist
Member#: 130288
Join Date: Oct 2006
Chapter/Region:
MWSOC
Location: Chicago/land
|
i checked again this morning and i smell exhaust coming from near the up pipe area. this is an obvious leak am i correct? but i still dont see where this rattling sound could be coming from because the dp is secure. and the thick aluminum gasket is neccessary because there is over a 1 inch gap between the dp and catback.. ..until i find a proper gasket. and could any of this even cause the turbo to die out that soon??
|
03-12-2007, 04:08 PM | #10 |
Scooby Specialist
Member#: 83211
Join Date: Mar 2005
Chapter/Region:
Tri-State
Location: Wilkes Barre, Pa
Vehicle:2002 WRX - stg4 PSM |
Sounds like one of two things to me.
1) Leak in the up/pipe. 2) Engine knock and pulled timing by the ECU. Do you have some form of EM? |
03-12-2007, 04:44 PM | #11 |
Scooby Specialist
Member#: 123515
Join Date: Aug 2006
Location: antarctica
|
^^Yea, I think he's doing both.
If you hear a loud screaming coming from the engine bay, most likely you have a leaking Uppipe. Also, your car will pull timing for a while to compensate for the loss in backpressure and will run sometimes worse than stock IF you don't get the proper EM with it. I highly suggest getting EM ASAP, especially because you have an '04. Also, try resetting your ECU, it may help... |
03-12-2007, 04:50 PM | #12 |
Scooby Newbie
Member#: 134937
Join Date: Dec 2006
Chapter/Region:
Tri-State
Location: Allentown,PA
Vehicle:2005 WRX STG 2 Miata MX-5 |
you tightened them all by feeling about how they were before? thats the lamest thing ive ever heard. you will be able to feel the exhaust leak with your hand, obviously smelling exhaust in the engine bay is not normal. please answer us as to whether you have engine management. you NEED it with your mods on an 04 wrx without question. unless you enjoy buying new motors
|
03-12-2007, 04:57 PM | #13 |
Scooby Specialist
Member#: 96793
Join Date: Sep 2005
Chapter/Region:
W. Canada
Location: Edmonton
Vehicle:02 ProTuned TD04 Now with more clunks! |
Get EM!
|
03-12-2007, 06:30 PM | #14 |
Scooby Guru
Member#: 82242
Join Date: Mar 2005
Chapter/Region:
Tri-State
Location: west milford, NJ
Vehicle:2005 wrx wagon wooh wooh!!!!! |
dude, it's your uppipe. fix the leak and reset your ecu and you will be fine. you don't need em right away, but would be a good idea soon. Your car will be fine till then.
Last edited by gingertooth; 03-12-2007 at 06:44 PM. |
03-12-2007, 06:40 PM | #15 |
Scooby Specialist
Member#: 130288
Join Date: Oct 2006
Chapter/Region:
MWSOC
Location: Chicago/land
|
im getting the xpt stage 2 in a month or so g2g to work thoo... bye
|
03-12-2007, 07:00 PM | #16 |
Scooby Specialist
Member#: 74392
Join Date: Nov 2004
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2010 STI DGM |
do you need EM with just an uppipe?
|
03-12-2007, 07:02 PM | #17 |
Scooby Specialist
Member#: 96793
Join Date: Sep 2005
Chapter/Region:
W. Canada
Location: Edmonton
Vehicle:02 ProTuned TD04 Now with more clunks! |
|
03-14-2007, 02:32 PM | #18 |
Scooby Specialist
Member#: 130288
Join Date: Oct 2006
Chapter/Region:
MWSOC
Location: Chicago/land
|
alright ive noticed that the slow wood sawing/thundering/rattling sound only happens when the boost gauge reads between the line below -0.3 and -0.6 ..when you first start the car after the car has completely cooled down such as the morning the needle on the boost gauge is within that range when idle. and it makes that sound unless the car has warmed up. this is the only time it makes that sound when the car is idle. when driving, when the needle is within that range it makes the sound too. im thinkin it has something to do with the wastegate? but i dont think it could be THAT loud and i dont think you should be able to feel it.. any ideas?
|
03-14-2007, 02:52 PM | #19 | |
Scooby Guru
Member#: 42549
Join Date: Aug 2003
Chapter/Region:
Tri-State
Location: You can find me in the 203
Vehicle:E92 M3 B9 Audi SQ5 |
Quote:
Sounds like an up-pipe leak to me. If so, the noise you hear is the air rushing out of the leak and vibrating the gasket, and when the gasket gets warmed up it expands and seals the leak. Not to mention that your car probably isnt too thrilled running stg2 w/o EM. The hesitaton around 4k rpms may be detonation and pulled timing as a result of the fuel map changeover. It could also be your dp rubbing o something, but doesnt make sense to me Just my $.02 |
|
03-14-2007, 02:55 PM | #20 |
Scooby Specialist
Member#: 112861
Join Date: Apr 2006
Location: VA
Vehicle:2013 STi sedan SWP |
stuck WG arm? not opening or closing?
|
03-14-2007, 03:37 PM | #21 |
Scooby Newbie
Member#: 105333
Join Date: Jan 2006
Location: Enfield, CT
Vehicle:2004 Impreza WRX WRB |
I thought you didnt need EM with those components? Just a DP, Catback, and UP?
I would assume that youd have to reset the ECU after doing a mod because the engine has to adjust...but I never heard 04's needing EM for just those mods before. |
03-14-2007, 03:50 PM | #22 |
Scooby Guru
Member#: 133597
Join Date: Nov 2006
Chapter/Region:
SCIC
Location: Orange
|
|
03-14-2007, 03:53 PM | #23 | |
Scooby Specialist
Member#: 123515
Join Date: Aug 2006
Location: antarctica
|
Quote:
http://forums.nasioc.com/forums/show...tonation+found Ever hear of the Open/Closed Loop Fueling Delay on 04+ years? Start searching so you don't let misinformation destroy your car if you are or will start modding. |
|
03-14-2007, 03:58 PM | #24 | |
Scooby Newbie
Member#: 105333
Join Date: Jan 2006
Location: Enfield, CT
Vehicle:2004 Impreza WRX WRB |
Quote:
|
|
03-14-2007, 04:01 PM | #25 | |
Scooby Specialist
Member#: 123515
Join Date: Aug 2006
Location: antarctica
|
Quote:
No problem. I'm glad you found out this issue today rather than any later. It's a common problem on 04+ WRXs that becomes very serious when no EM is taken in consideration BEFORE adding the exhaust power mods. There are plenty of threads on here explaining similar issues. With an 04+, EM FIRST, TBE AFTER. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Just finished turbo install and the car is oveheating at idle? | disque71 | Newbies & FAQs | 8 | 11-13-2006 05:41 PM |
Help,Just tuned and Car is acting oddly | mpadovano | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 22 | 01-10-2006 09:00 PM |
Just installed new UP/DP combo. | w0rx4me | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 9 | 04-13-2005 09:12 PM |
Let me preface this post with "I'm fine, and the car is fine" | North Ursalia | New England Impreza Club Forum -- NESIC | 40 | 08-14-2002 10:23 PM |
And the car is no more! | Monkey_BoyRS | Mid West Subaru Owners Club Forum -- MWSOC | 15 | 11-15-2001 07:06 PM |