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Old 10-31-2012, 09:08 PM   #1
matthew1125
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Default 2011 STI Downpipe Stock Exhaust

So I recently purchased the Perrin turbo blanket, Perrin Heatshield, and Cobb DP. Pretty pumped for these to go on Friday! I know I will gain power from the DP and improved turbo flow (finally.) From what I have read, the rumble will still still be comparable to stock, which isn't an issue.

My question is, will I still have the amazing turbo whistle that I hear from the videos? As far as the down spool. I am aware that a complete turboback will allow the whistle to be audible, but as of now, I'm not heading that route.

Thanks!
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Old 10-31-2012, 09:11 PM   #2
BigRob74
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what are you using to tune? i have a catless DP on my car with the stock exhaust. car is a little deeper, and you can hear the turbo a little bit more (as opposed to not at all). if you are looking for the wooosshhing noises, you need to get an intake
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Old 10-31-2012, 09:18 PM   #3
matthew1125
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I do have the Cobb Intake w/ airbox now. I will be running Cobb's OTS Stage 2 maps. then go protune later. I talking the sound when you give it gas and then rpms drop and the turbo whistles.
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Old 10-31-2012, 09:28 PM   #4
BigRob74
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i hear it, but its not as pronounced as you may think. i am also catless, which increases that noise..i think the intake may drown it out all together, but im not sure. keep us updated!
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Old 10-31-2012, 09:34 PM   #5
matthew1125
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That's what I was thinking too. Catless would open it up, but nah.. CURSE YOU INTAKE NOISE
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Old 10-31-2012, 09:54 PM   #6
BKALLDAY
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Quote:
Originally Posted by BigRob74
what are you using to tune? i have a catless DP on my car with the stock exhaust. car is a little deeper, and you can hear the turbo a little bit more (as opposed to not at all). if you are looking for the wooosshhing noises, you need to get an intake
Rob what kind of tune did you do for the DP to stock exhaust?
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Old 10-31-2012, 10:03 PM   #7
BigRob74
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Quote:
Originally Posted by BKALLDAY View Post
Rob what kind of tune did you do for the DP to stock exhaust?
i went with a TP stage 2. he makes maps for our cars.

www.torquedperformance.com

i wont do an intake or exhaust, lots of money for a lot of noise. i like the way the car sounds now..
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Old 10-31-2012, 10:09 PM   #8
BKALLDAY
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Quote:
Originally Posted by BigRob74 View Post
i went with a TP stage 2. he makes maps for our cars.

www.torquedperformance.com

i wont do an intake or exhaust, lots of money for a lot of noise. i like the way the car sounds now..
i agree with you 100%. good look rob. i'll have to look into this after i grab my ap. sorry for interrupting this post.
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Old 10-31-2012, 10:12 PM   #9
HinshawWRX
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Quote:
Originally Posted by BKALLDAY View Post
Rob what kind of tune did you do for the DP to stock exhaust?
A tune isn't going to make a difference in sound. And the tune requirement for a downpipe on any Subaru is Stage 2. Be it Perrin, Cobb, TP, etc etc.
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Old 10-31-2012, 10:32 PM   #10
BKALLDAY
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Quote:
Originally Posted by HinshawWRX View Post
A tune isn't going to make a difference in sound. And the tune requirement for a downpipe on any Subaru is Stage 2. Be it Perrin, Cobb, TP, etc etc.
oh yeah im not looking for sound. and i know tunes won't make a difference in sound. just never knew you could run an AM DP w/ the stock exhaust.
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Old 11-01-2012, 11:14 AM   #11
matthew1125
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All you need to run a stage 2 map is a DP. Of course the exhaust will make you gain a little more, but as long as you have a DP, you are able to run a stage 2 map.
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