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Old 10-31-2012, 09:08 PM   #1
matthew1125
Scooby Newbie
 
Member#: 258163
Join Date: Sep 2010
Location: West Virginia
Vehicle:
2011 STI
SPW

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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