I have a full stock s4 exhaust laying around in my garage for about 6 months now. i know one other person has done this on their avant. Not looking for any big power gains or anything but how would this differ in the sound, especially if i keep that flap open. (s4 muffleres have a valve that closes and recirculates the gases so it's sounds quieter at higher rpm).
Anybody else has done this? or do you have any insight on it? The look alone will be a bit bettter... the tips are larger and shinier than my tips are looking right now.
was going to do some serious modding this year but i went to london and im gong to antigua tomorrow morning (caribbean) then i still have 2 other trips planned b4 the end of the summer. so i guess it's next summer for all my cosmetic mods. (dont wanna get my rims in the winter)
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