Hey guys.. i was wondering if you had any thoughts on this: i got a 99 GS-R and everything runs smoothly.. oil is good, gas mileage satisfactory, but the only thing that keeps bugging is the fact that i get a dense amount of black smoke/carbon (i have no idea which it is) coming out of my exhaust and it gets all over my back bumper (i got a white car so you can tell easily).. yes i know thats a sign of running rich, and that most hondas run rich, but i have never seen another integra with so much black stuff on its bumper. i have a 5zigen cat-back exhaust.. any suggestions on what i can do? should i scrap this exhaust and go with another one, get a new cat. i've reset ecu several times and i only have exhaust, took out my CAI a month ago... please HELP

 

your car is running a lil rich.

 

It's not normal and your car is running very rich. Is your CEL on? Maybe you should try to replace your primary o2 sensor.

 

hey bro, why don't u have someone stand by ur exhaust with a white piece of paper while u rev it up to 6000rpm ok.... then it'll be easier to tell if it's carbon or not...and let that smart-person...be smart enuff to stand by a 5zigen fireball as it's being revved up to 6k rpm k thanks....

 

check your cat. dud cat had this exact effect on my car too.
the soot build up went away with a new cat.

 

Do you still have your cat on? Or did you put in a test pipe?

 

Check your 02 sesnor.

Replace your fuel filter, air filter, and make sure the timing is correct.

 

thanks for the suggestions so far. yeah i havn't put in a new cat, im thinking i scrap this exhaust (cause the damn thing seriously is a fart can) and i put in a new cat as well. The CEL is not on, like i said everything runs fine (i even put in brand new GSR pistons and rings cause the old ones were burned really bad), but yeah i definitely think its running hella rich. Thanks so far, more suggestions are welcome

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thaiphob &raquo;</TD></TR><TR><TD CLASS="quote">your car is running a lil rich.</TD></TR></TABLE> definitely not a "lil" rich....that wouldnt cause black deposits around the exhaust.