Quote:
Originally Posted by Nathan_h
Does the performance exhaust increase power noticeably?
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Not all that much - maybe 4-5 hp at high revs. But it definitely increases the fun factor - it sounds great. Several people have commented how my 128 "doesn't sound at all like a 128". Check the private seller sales section and you may be able to find a used one - I got a Dinan free-flow exhaust for my 335 for about half-price from there.
Your best increase (aside from something like the BMS Powerbox) would be a freer-flowing intake (expensive) or a drop-in filter from AFE or K&N (around $50). But don't expect a lot. The N52 engine gets fully broken-in somewhere between 8500 and 10,000 miles and it runs noticeably better after that.