Thread: Exotic sound?
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Old 08-17-2011, 11:53 PM   #71 (permalink)
Methodical4u
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Originally Posted by AlexRaymond19 View Post
Which exhaust has the most proven gains? Does anyone know? I thought stillen and FI were the most?
as of now, F.I. has the highest gains from 20 whp with stock cats and about 25-28 with test pipes. I think stillen is around 18? I believe I read that somewhere.
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