So I have been reading the fast intentions thread....it seems like the stock exhaust is real restrictive? I mean FI was able to get 20whp by just replacing the catback ALONE...they threw in their resonated test pipes into the mix and gained about 8whp...whats up with that? I was thinking the other way around...test pipes, hfc gaining 20whp and catbacks 8whp...haha
Anyway my main interest is to keep the stock catback...I can't see myself shelling out $1300 on a catback...I also would like to keep the car as sleeper as possible...I heard stock catback is the quietest setup even with test pipes and HFC...
If someone can chime in on our stock catbacks, that would be great
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