Is this soot normal?

kenchan · 02-11-2013, 04:36 PM

op- after you dry your car after a wash or wax, run the bumper with california duster. it removes the static build up.

and no, that is not normal. you are running too rich or just attracting carbon dust from another car.

SouthArk370Z · 02-11-2013, 04:43 PM

Particle size is a bit large for tailpipe soot. And, as Cmike2780 pointed out, it would be more concentrated around the pipes. It looks like road dirt (tiny bits of tire, primarily) to me.

DEpointfive0 · 02-11-2013, 05:25 PM

Quote:

Originally Posted by SouthArk370Z

Particle size is a bit large for tailpipe soot. And, as Cmike2780 pointed out, it would be more concentrated around the pipes. It like like road dirt (tiny bits of tire, primarily) to me.

50/50

OP, do you have TPs or HFCs???

I HAD TPs, not back to stock and holy crap it's a world of difference...

mwhit02 · 02-11-2013, 06:40 PM

I have test pipes, but I've had this problem since I bought the car new

nabenson · 02-11-2013, 06:56 PM

A lot of it is brake dust. It is really bad after a track day. There isn't much you can do except switch to a lower dust pad.

mwhit02 · 02-11-2013, 07:11 PM

do you guys think it has anything to do with the little vents in the rear bumper? Like brake dust getting through there? I also removed the little square paper filter looking things that are underneath the trunk lining near the fender wells...I had no idea what those were for.

nabenson · 02-11-2013, 07:16 PM

Quote:

Originally Posted by mwhit02

do you guys think it has anything to do with the little vents in the rear bumper? Like brake dust getting through there? I also removed the little square paper filter looking things that are underneath the trunk lining near the fender wells...I had no idea what those were for.

Yes, the vents help but the dust comes from the front of the car too. Every time you hit the brakes you are wearing off a layer of the material. It ends up all over the back of the car because of the way air flows over it.

fuct · 02-12-2013, 08:45 AM

Quote:

Originally Posted by mwhit02

do you guys think it has anything to do with the little vents in the rear bumper? Like brake dust getting through there? I also removed the little square paper filter looking things that are underneath the trunk lining near the fender wells...I had no idea what those were for.

the rear bumper vents are fake!

i had the same stuff accumulate on my rear too after i put on res tp's. once they broke and i went back to the factory cats the problem lessened. the black stuff i see now is tire that comes off during heavy driving.

i would put those paper filter things back. they are for airflow of somesort and the paper part keeps crap out of the cabin. (if these are the same items im thinking about)

i made a thread about this awhile back. basically make sure your rear tires are aligned and yes the TP's are making it more dirty.

02-11-2013, 04:36 PM	#1 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	op- after you dry your car after a wash or wax, run the bumper with california duster. it removes the static build up. and no, that is not normal. you are running too rich or just attracting carbon dust from another car. DEpointfive0 likes this.

02-11-2013, 04:43 PM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Particle size is a bit large for tailpipe soot. And, as Cmike2780 pointed out, it would be more concentrated around the pipes. It looks like road dirt (tiny bits of tire, primarily) to me. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 02-11-2013 at 07:45 PM. Reason: Correct spelling error

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02-11-2013, 06:40 PM	#4 (permalink)
mwhit02 Enthusiast Member Join Date: Sep 2012 Location: St. Louis Posts: 358 Drives: '15 Audi Allroad Rep Power: 13	I have test pipes, but I've had this problem since I bought the car new

02-11-2013, 06:56 PM	#5 (permalink)
nabenson Base Member Join Date: Oct 2010 Location: Dallas, TX Posts: 103 Drives: 10 370z Nismo PW M6 Rep Power: 15	A lot of it is brake dust. It is really bad after a track day. There isn't much you can do except switch to a lower dust pad.

02-11-2013, 07:11 PM	#6 (permalink)
mwhit02 Enthusiast Member Join Date: Sep 2012 Location: St. Louis Posts: 358 Drives: '15 Audi Allroad Rep Power: 13	do you guys think it has anything to do with the little vents in the rear bumper? Like brake dust getting through there? I also removed the little square paper filter looking things that are underneath the trunk lining near the fender wells...I had no idea what those were for.