Thread: 2.93 Diff
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Old 03-18-2009, 09:11 PM   #9
Aus328ci
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Join Date: Nov 2006
Location: Melbourne, Australia
Posts: 84
My Ride: E46 328ci
Hard to say because I put them both on at practically the same time. In theory I'd have to say the exhaust will add more power especially if it's particularly free flowing like mine (high-flow cats, etc), but the ECIS induction noise is great too. They work well together.

What sort of exhaust are you looking at?
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