Quote:
Originally Posted by BJJfrog
I don't think you can. At least not legit from BMW.
You can fit an M Performance exhaust though. Power difference is minimal and all top end if you look at dyno graphs.
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There is ZERO power difference with MPE, don?t fool yourself.
The ZCP Exhaust will sound slightly better.
You?ll need an aftermarket tune for the rest you?re looking for.