Quote:
Originally Posted by Richbot
No guarantees, but the aFe 300cell catted xpipe hasn't thrown a CEL on my car in more than a year and 10,000 miles
If you don't want it to be absurdly loud I'd stick with a stock muffler with any xpipe to start and see how you like it. The aFe increases sound and rasps a bit more than the stock xpipe. It also doesn't fit super awesome.
Another option might be somebody else's aftermarket x with aftermarket 300cell cats welded in the stock location.
You can get a back box to match later once you know how much "more" you want.
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So just for reference I was driving a N51 128i 3.0. I had deleted secondary cats in that car as well as the muffler to just incorporate straight piping and exhaust tips. car had a lot of burbles and pops and backfire on decel, Some might think it was too much but I loved how it sounded and was on it all the time, Now I know this is a V8 so im just wondering if deleting the mufflers on the E90 and maybe running the pulley kit and a tune would give me what im looking for without the loss of torque that might come from deleting the muffler on its own?