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      02-01-2013, 06:29 PM   #1

TxBeem's Avatar
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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, 07:39 PM   #2

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Condensation in the exhaust mixed with carbon. Perfectly normal and nothing to worry about.
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      02-01-2013, 07:43 PM   #3

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Originally Posted by Fully_Bolted
Condensation in the exhaust mixed with carbon. Perfectly normal and nothing to worry about.
BMW master tech

2010 E92 335i 6-speed 25k miles. - For sale.
1989 E30 325i coupe 5-speed DD
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      02-01-2013, 08:21 PM   #4

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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, 06:23 PM   #5

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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
A/W E92 335i M-sport with JB4 G5 ISO/ E40 WEDGE PERFORMANCE BACKEND FLASH, Alpina TCU flash for AT/Switch-tronic +AR Downpipes, Stett gen 1 intake, Wagner-Tuning FMIC+RB Turbo setup/ RB PCV Valve+ Akro exhaust+60% E85/93 mix,+ HRE P40S wheels, KW coilovers, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@119mph on street tires) NO METH!
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