Cat back exhaust systems

whodatm3 · 01-18-2014, 09:59 AM

Is it install and drive or other adjustment/tuning needed?

kscarrol · 01-18-2014, 10:26 AM

For the mufflers only, install and drive... If you remove the cats then coding is needed.

dfjaws · 01-18-2014, 03:01 PM

Coding isn't necessarily *required*. The car will function normally after a primary cat delete, it will just have a check engine light. It's fine to drive it like that, assuming the light doesn't annoy you.

As stated above, mufflers are an install and drive kind of thing.

01-18-2014, 09:59 AM	#1
whodatm3 New Member 0 Rep 10 Posts Drives: 2011 BMW M3 convertible Join Date: Dec 2013 Location: houston iTrader: (0)	Cat back exhaust systems Is it install and drive or other adjustment/tuning needed?
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01-18-2014, 10:26 AM	#2
kscarrol Brigadier General 8909 Rep 4,107 Posts Drives: 2021 X3 M40i, 1974 2002 Tii Join Date: Jun 2010 Location: Greenville, SC iTrader: (0)	For the mufflers only, install and drive... If you remove the cats then coding is needed. __________________ 2021 X3 M40i 1974 2002tii, Inka, 5 sp manual BMWCCA # 327475
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01-18-2014, 03:01 PM	#3
dfjaws Lieutenant 57 Rep 535 Posts Drives: E90 M3 / E86 M Coupe Join Date: Sep 2011 Location: Des Moines, IA iTrader: (5)	Coding isn't necessarily required. The car will function normally after a primary cat delete, it will just have a check engine light. It's fine to drive it like that, assuming the light doesn't annoy you. As stated above, mufflers are an install and drive kind of thing. __________________
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