N55 performance upgrades

Barrygesinski · 10-01-2021, 10:41 PM

I have a 2011 135i convertible using a race chip dsx as a tuner and a cold air box I need suggestion on downpipe and exhaust and would a ethanol injection system give any performance improvement

blue135 · 10-02-2021, 02:41 PM

Do you mean ethanol or methanol injection?

Barrygesinski · 10-02-2021, 05:32 PM

Quote:

Originally Posted by blue135

Do you mean ethanol or methanol injection?

Either one just looking for some more power

WilsoN55 · 10-18-2021, 11:44 PM

VRSF downpipe is popular and affordable. An intercooler upgrade may be worth considering.

10-01-2021, 10:41 PM	#1
Barrygesinski Registered 0 Rep 2 Posts Drives: 2011 BMW 135i convertible Join Date: Jun 2021 Location: Greenville south Carolina iTrader: (0)	N55 performance upgrades I have a 2011 135i convertible using a race chip dsx as a tuner and a cold air box I need suggestion on downpipe and exhaust and would a ethanol injection system give any performance improvement
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10-02-2021, 02:41 PM	#2
blue135 Captain 366 Rep 650 Posts Drives: 2008 135i Convertible Join Date: Aug 2015 Location: Sarasota, FL iTrader: (1)	Do you mean ethanol or methanol injection?
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10-18-2021, 11:44 PM	#4
WilsoN55 N55 E82 DCT /// N57 F10 Daily <-- 93 Rep 123 Posts Drives: N55 E82 DCT /// N57 F10 Join Date: Aug 2021 Location: Ontario iTrader: (0) Garage List 2011 BMW 135i [0.00] 2015 BMW 535Dx [0.00]	VRSF downpipe is popular and affordable. An intercooler upgrade may be worth considering.
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