Quote:
Originally Posted by BMW_Belgier
That doesn't solve the problem OP has...
He wants some more Performance, a sportier Sound and all that without the fear of being off warrenty...
That's actually that what i want too... And i already have the PPK and PE...
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Yes, but he has to remember changing the downpipe to anything aftermarket, catted or not, will void the warranty. You are messing with emissions equipment, and the dealership could bring up backpressure/O2 issues/etc if you modify it. So I would say BMW PE with stock DP (Safe route with warranty, less performance, more sound), or C-Less downpipe stock exhaust (Quieter, more performance, warranty void).