anyone else with test pipes get this.....?

Jordo! · 12-22-2010, 10:51 AM

Quote:

Originally Posted by fuct

no it was from the cats.

and the above picture isnt the normal way it looks. just the worst its ever been.

Hmm. Be interesting to see what your AFR's are.

fuct · 12-22-2010, 02:07 PM

Quote:

Originally Posted by Jordo!

Hmm. Be interesting to see what your AFR's are.

i concur.....

Nismoracer · 12-24-2010, 01:14 PM

Quote:

Originally Posted by Imperial

I already get a little soot back there even with just the stock exhaust... I guess this means it's a HELLS NO to test pipes for me =P

CBRich · 12-24-2010, 02:42 PM

I have the same test pipes and the soot isn't near that bad.

chops · 12-24-2010, 03:26 PM

like i said before, i believe the park bench on our hatches is the reason the rear end stays so dirty. the air doesnt get to sweep over the hatch like non nismo's, and the hot exhaust gases (with soot) just rise and collect under our spoilers.

you can easily see how this works when it rains...the first week i had it, it rained and the entire car was clean, minus the rear bumper/area under the spoiler...everything just loves to collect there!

One_Quick_Z · 12-24-2010, 04:15 PM

Yes I am willing to bet your AFR is way out of wack, that should never look like that even at its worst stage.

DAN

fuct · 12-27-2010, 12:06 PM

checked all the bolts, no leaks, reset ecu, replaced my HKS air filters with the stock ones....

same sh1t.... hmmmmm

Jordo! · 12-27-2010, 09:59 PM

Quote:

Originally Posted by fuct

checked all the bolts, no leaks, reset ecu, replaced my HKS air filters with the stock ones....

same sh1t.... hmmmmm

Run it on a dyno -- see what you're putting down and what the tail pipe sniffer says.

It's possible that if you have a CEL for the catalyst, the ECU is messing with the fueling -- that will all show up on the dyno.

Zuppy51 · 12-28-2010, 10:26 AM

Well stock, I get a very, very slight film that's visible on grey. But this does not look right. I would be concerned, of carbon build up in the engine. My S2000 had a similar problem. It was evident when I had the head off. The tops of the pistons where covered in black carbon about 2-3mm thick.

Nismoracer · 01-05-2011, 11:07 PM

So not everyone with test pipes have this problem on the back side?

fuct · 01-06-2011, 09:23 AM

Quote:

Originally Posted by Zuppy51

Well stock, I get a very, very slight film that's visible on grey. But this does not look right. I would be concerned, of carbon build up in the engine. My S2000 had a similar problem. It was evident when I had the head off. The tops of the pistons where covered in black carbon about 2-3mm thick.

and all this carbon is from my simple resonated test pipes????? im finding it hard to believe.

so i take it a CE light is a lil more to be concerned with than just a light. i wouldnt think id have all this from something so simple.

(side note, after taking out and cleaning off the O2 sensors, repacking the opening of the sensor hole with steel wool, and resetting the ECU i noticed LESS carbon build up on my bumper)

i think i might be switching to a high flowing cat soon......

Blu370 · 01-06-2011, 09:48 AM

Quote:

Originally Posted by fuct

I have a set of CNT resonated test pipes as my only mod, and i get this nasty black residue on the back of my nismo. im guessing the cars areodynamics are churning it up and depositing it....?no? i can wash the car and drive to dinner and bam! already a thin layer. these pics are from waiting two weeks to wash.

its not tires being eatin' up, ive had an alignment done.

anyone else? am i running stupid rich?

i know this happends with test pipes but why would it happen if u have resonated ones?

fuct · 01-06-2011, 10:25 AM

both test pipes and resonated test pipes are straight through. the resonator just helps muffle a lil noise. it does nothing to block the air coming out.

i need these!
http://www.cntracing.com/CNT_perform...i_p/celfix.htm

mimics what some of the higher end brands due. my $199 rtp's are now $270.... grrrrrrr get what you pay for i guess.

wishihadnav · 01-06-2011, 12:21 PM

damn thats alot of soot...i have GTM res tp's and it still doesnt get that dirty..

fuct · 01-06-2011, 02:00 PM

Quote:

Originally Posted by wishihadnav

damn thats alot of soot...i have GTM res tp's and it still doesnt get that dirty..

but i doubt you were throwing a CEL. i think that was the kicker. IT WAS messing with the fuel trim.

soooo anyone think ive done any damage running this way for 5-7k miles?

i will be adding the items i linked above.

12-24-2010, 04:15 PM	#21 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 219	Yes I am willing to bet your AFR is way out of wack, that should never look like that even at its worst stage. DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

01-06-2011, 10:25 AM	#28 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	both test pipes and resonated test pipes are straight through. the resonator just helps muffle a lil noise. it does nothing to block the air coming out. i need these! http://www.cntracing.com/CNT_perform...i_p/celfix.htm mimics what some of the higher end brands due. my $199 rtp's are now $270.... grrrrrrr get what you pay for i guess. Last edited by fuct; 01-06-2011 at 11:14 AM.

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12-24-2010, 02:42 PM	#19 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	I have the same test pipes and the soot isn't near that bad.

12-24-2010, 03:26 PM	#20 (permalink)
chops A True Z Fanatic Join Date: Oct 2010 Location: NA Posts: 1,732 Drives: NA Rep Power: 22	like i said before, i believe the park bench on our hatches is the reason the rear end stays so dirty. the air doesnt get to sweep over the hatch like non nismo's, and the hot exhaust gases (with soot) just rise and collect under our spoilers. you can easily see how this works when it rains...the first week i had it, it rained and the entire car was clean, minus the rear bumper/area under the spoiler...everything just loves to collect there!

12-27-2010, 12:06 PM	#22 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	checked all the bolts, no leaks, reset ecu, replaced my HKS air filters with the stock ones.... same sh1t.... hmmmmm

12-28-2010, 10:26 AM	#24 (permalink)
Zuppy51 Base Member Join Date: May 2010 Location: SF Bay Area Posts: 95 Drives: 2010 PG Nismo #414 Rep Power: 15	Well stock, I get a very, very slight film that's visible on grey. But this does not look right. I would be concerned, of carbon build up in the engine. My S2000 had a similar problem. It was evident when I had the head off. The tops of the pistons where covered in black carbon about 2-3mm thick.

01-05-2011, 11:07 PM	#25 (permalink)
Nismoracer Enthusiast Member Join Date: Nov 2010 Location: Earth Posts: 420 Drives: 10 Nismo Rep Power: 15	So not everyone with test pipes have this problem on the back side?

01-06-2011, 12:21 PM	#29 (permalink)
wishihadnav A True Z Fanatic Join Date: Nov 2009 Location: 90090 Posts: 1,851 Drives: Force Fed Nismo Rep Power: 184	damn thats alot of soot...i have GTM res tp's and it still doesnt get that dirty..