sdrive 20i custom downpipe

castilla · 11-08-2013, 01:02 PM

i currently have a small muffler at rear and i deleted front muffler..i am thinking to install a custom downpipe.does anyone tried downpipe on n20 engine ? any errors or any performance losses/gains ?

i need your opinions , thank you

nicknaz · 11-08-2013, 01:10 PM

I think a good first step is to see if there is a tuner that supports your engine and ECU combination.

Might not really see gains without the tune. Also would be good to check on FMIC

11-08-2013, 01:02 PM	#1
castilla Second Lieutenant 51 Rep 230 Posts Drives: 2014 M4 Join Date: Mar 2012 Location: tr iTrader: (0)	sdrive 20i custom downpipe i currently have a small muffler at rear and i deleted front muffler..i am thinking to install a custom downpipe.does anyone tried downpipe on n20 engine ? any errors or any performance losses/gains ? i need your opinions , thank you
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11-08-2013, 01:10 PM	#2
nicknaz Lieutenant General 3187 Rep 10,509 Posts Drives: C6Z Join Date: May 2008 Location: NorCal iTrader: (0)	I think a good first step is to see if there is a tuner that supports your engine and ECU combination. Might not really see gains without the tune. Also would be good to check on FMIC
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