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

i concur.....

:iagree:

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

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!

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

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.

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.

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

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......

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

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.

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.

:icon14: