To those with catless down pipes

NorCal f80 · 11-17-2014, 03:32 PM

How dirty [and how often] does your back bumper get? How bad is the soot on the F8x? It was pretty bad with my GTR which is the main reason I went E85 on it.

Wes Howell · 11-17-2014, 03:56 PM

I get a decent amount even with just secondary cat delete. I'd imagine it will be pretty noticeable.

JustinCredibleM · 11-17-2014, 04:08 PM

Its not as bad as the GT-R and I assume its because of the cleaner burn with direct injection. My GT-R in one day has more black soot on the rear than a week of driving in my M4.

MasterC17 · 11-17-2014, 04:13 PM

Haven't actually noticed any on my car, but haven't really looked either haha. Also running an E30 mix and methanol so that would probably help minimize it.

Tiago@VRSF · 11-18-2014, 12:12 PM

I haven't noticed any extra soot on our MW car but I've only put a few hundred miles on our test set so far.

NorCal f80 · 11-18-2014, 12:27 PM

If you guys haven't noticed, then I'm sure it's not bad because the GTR was real bad.

11-17-2014, 03:32 PM	#1
NorCal f80 Lieutenant Colonel 346 Rep 1,656 Posts Drives: M3 Join Date: Apr 2014 Location: Nor Cal iTrader: (0)	To those with catless down pipes How dirty [and how often] does your back bumper get? How bad is the soot on the F8x? It was pretty bad with my GTR which is the main reason I went E85 on it.
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11-17-2014, 03:56 PM	#2
Wes Howell www.facebook.com/weshowellcreative 59 Rep 623 Posts Drives: 2015 AW M4 Coupe Project Car Join Date: Feb 2011 Location: Instagram #weshowell iTrader: (1)	I get a decent amount even with just secondary cat delete. I'd imagine it will be pretty noticeable.
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11-17-2014, 04:08 PM	#3
JustinCredibleM Second Lieutenant 47 Rep 287 Posts Drives: '15 GT-R, '02 996TT Join Date: Mar 2014 Location: Las Vegas, NV \| San Diego, CA iTrader: (0)	Its not as bad as the GT-R and I assume its because of the cleaner burn with direct injection. My GT-R in one day has more black soot on the rear than a week of driving in my M4.
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11-17-2014, 04:13 PM	#4
MasterC17 Captain 329 Rep 984 Posts Drives: 2015 BMW M3 Join Date: Aug 2014 Location: Massachusetts iTrader: (3)	Haven't actually noticed any on my car, but haven't really looked either haha. Also running an E30 mix and methanol so that would probably help minimize it. __________________ 2009 X5d \| 2007 E90 Track \| 2002 M3 Track \| 1991 535i Track
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11-18-2014, 12:12 PM	#5
Tiago@VRSF 2095 Rep 43,350 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	I haven't noticed any extra soot on our MW car but I've only put a few hundred miles on our test set so far.
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11-18-2014, 12:27 PM	#6
NorCal f80 Lieutenant Colonel 346 Rep 1,656 Posts Drives: M3 Join Date: Apr 2014 Location: Nor Cal iTrader: (0)	If you guys haven't noticed, then I'm sure it's not bad because the GTR was real bad.
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