Quote:
Originally Posted by The Wind Breezes
Just knock the guts out of your stock downpipe and take them to a recycler. 100% as effective as an aftermarket downpipe and you actually get paid for it.
Actually the stock exhaust is made from HIGHER quality stainless than most aftermarkets which use whatever cheap chinese stock they can get. BMW doesn't want to have to replace your exhaust.
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+1 on this, find a stock dp and gut it out, exact same gains
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2006 Z4 M Roadster Black/Imola Red, FBO VF-Engineering, e85 Flex Fuel-Sold
2012 BMW 135i N55 DCT Alpine White/Coral Red, FBO, TBI, Full e85, JB4 BEF-Sold
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