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      04-20-2013, 09:53 PM   #8
ocso1606
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Drives: 2013 335i M
Join Date: Aug 2012
Location: Syracuse,NY

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2007 BMW 525xi  [0.00]
2010 Volvo  [0.00]
2013 BMW 335i M-Sport  [0.00]
Quote:
Originally Posted by roundel335 View Post
"Double the power" of what? The MPPK? Don't fool yourself into thinking that. The MPPK puts out WAY more than the advertised extra 20 HP. Catless downpipes are fine for a track car, but will screw up the engine management on a daily driver, regardless of the "fixes" provided by the piggybackers. All this "efficient dynamics" stuff is making those kind of mods much more of a risky venture.
I agree! Stick with bmw, not some crap after market..........
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