I have black gunk coming out the exhaust

TxBeem · 02-01-2013, 05:29 PM

See the pic. What is going on? I have JB4, run about 30-40% ethanol, and catless DP.

Fully_Bolted · 02-01-2013, 06:39 PM

Condensation in the exhaust mixed with carbon. Perfectly normal and nothing to worry about.

BMWN54tech · 02-01-2013, 06:43 PM

Quote:

Originally Posted by Fully_Bolted

Condensation in the exhaust mixed with carbon. Perfectly normal and nothing to worry about.

This.

JTracy223 · 02-01-2013, 07:21 PM

I have the same exact situation with my E92 I run JB4,DCI, and DP's.... I haven't noticed anything wrong in over a year, I think we're good bro, no need to worry.

boostaholic786 · 02-02-2013, 05:23 PM

I have the same issues and honestly I think it is completely normal as well. If you have catless downpipes atleast, then this should be a thing of the norm. If you have stock downpipes then I dont think the car would do this. Nothing to worry about

02-01-2013, 05:29 PM	#1
TxBeem Captain 93 Rep 651 Posts Drives: 2008 E90 Join Date: Jul 2010 Location: Dallas iTrader: (6)	I have black gunk coming out the exhaust See the pic. What is going on? I have JB4, run about 30-40% ethanol, and catless DP.
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02-01-2013, 06:39 PM	#2
Fully_Bolted Banned 11 Rep 442 Posts Drives: E92 335i Join Date: Sep 2012 Location: USA iTrader: (0)	Condensation in the exhaust mixed with carbon. Perfectly normal and nothing to worry about.
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02-01-2013, 07:21 PM	#4
JTracy223 Private 7 Rep 79 Posts Drives: 07 335i Coupe 6MT Join Date: Aug 2011 Location: South Jersey/Philly iTrader: (0)	I have the same exact situation with my E92 I run JB4,DCI, and DP's.... I haven't noticed anything wrong in over a year, I think we're good bro, no need to worry.
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02-02-2013, 05:23 PM	#5
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	I have the same issues and honestly I think it is completely normal as well. If you have catless downpipes atleast, then this should be a thing of the norm. If you have stock downpipes then I dont think the car would do this. Nothing to worry about __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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