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Old 09-13-2010, 07:17 PM   #12
Scooby Newbie
Member#: 206040
Join Date: Mar 2009
Location: Carlsbad, CA
2009 Audi A4 2.0T
APR Stage 1


ya you won't notice anything from a WRX muffler. The 04- 07 STi might make that very SLIGHT difference, but on a bone stock system even that wont do much.

removing a resonator with one of those mufflers esp the STI would increase the sound.. the best thing to make the car a bit louder is to remove the intake silencer / resonator... or get an intake.. but I'm not a fan of what it does to the tq and that's a whole different thread..
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