2011 STI Downpipe Stock Exhaust

matthew1125 · 10-31-2012, 09:08 PM

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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BigRob74 · 10-31-2012, 09:11 PM

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

matthew1125 · 10-31-2012, 09:18 PM

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.

BigRob74 · 10-31-2012, 09:28 PM

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!

matthew1125 · 10-31-2012, 09:34 PM

That's what I was thinking too. Catless would open it up, but nah.. CURSE YOU INTAKE NOISE

BKALLDAY · 10-31-2012, 09:54 PM

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?

BigRob74 · 10-31-2012, 10:03 PM

Quote:

Originally Posted by BKALLDAY

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..

BKALLDAY · 10-31-2012, 10:09 PM

Quote:

Originally Posted by BigRob74

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.

HinshawWRX · 10-31-2012, 10:12 PM

Quote:

Originally Posted by BKALLDAY

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.

BKALLDAY · 10-31-2012, 10:32 PM

Quote:

Originally Posted by HinshawWRX

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.

matthew1125 · 11-01-2012, 11:14 AM

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.

10-31-2012, 09:08 PM	#1
matthew1125 Scooby Newbie Member#: 258163 Join Date: Sep 2010 Location: West Virginia Vehicle: 2011 STI SPW	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! * Registered users of the site do not see these ads.

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10-31-2012, 09:11 PM	#2
BigRob74 Scooby Specialist Member#: 305107 Join Date: Dec 2011 Chapter/Region: Tri-State Location: Long Island, NY Vehicle: 2012 wrx/TP Stage 2 satin white pearl	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

10-31-2012, 09:18 PM	#3
matthew1125 Scooby Newbie Member#: 258163 Join Date: Sep 2010 Location: West Virginia Vehicle: 2011 STI SPW	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.

10-31-2012, 09:28 PM	#4
BigRob74 Scooby Specialist Member#: 305107 Join Date: Dec 2011 Chapter/Region: Tri-State Location: Long Island, NY Vehicle: 2012 wrx/TP Stage 2 satin white pearl	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!

10-31-2012, 09:34 PM	#5
matthew1125 Scooby Newbie Member#: 258163 Join Date: Sep 2010 Location: West Virginia Vehicle: 2011 STI SPW	That's what I was thinking too. Catless would open it up, but nah.. CURSE YOU INTAKE NOISE

11-01-2012, 11:14 AM	#11
matthew1125 Scooby Newbie Member#: 258163 Join Date: Sep 2010 Location: West Virginia Vehicle: 2011 STI SPW	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.