Quote:
Originally Posted by Marcusz
My exhaust is always dirty,i clean them then after one ride there all black carbon again,i wonder why,is this normal,anybody know about this,im thinking because i got the stillen supercharger that my car was tuned too rich and thats why,can this be right ????
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Running rich. I had the same problem with black tail pipes before my UpRev tune. I did intake and exhaust mods which caused the engine to run rich. A little AFR tuning solved the problem and no more black pipes.