Alot of exhaust soot. What be it?

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2GN Member
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Joined: Sun Jul 28, 2013 8:41 pm

Alot of exhaust soot. What be it?

Post by Nathan9790 » Tue Jul 30, 2013 10:44 pm

so i have an exhaust whistle on my neon (for shits and gigles) and have noticed it has quite alot of soot buildup on it when i took it off (its completly black) what could it be? Bad cat?

occasional demons
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Post by occasional demons » Wed Jul 31, 2013 7:19 pm

Unless the exhaust smells pig rich, it is relatively normal. My '01 has never had a clean pipe. It gets near 40 MPG on the highway, so I am not too concerned.

If your o2 sensor is not setting a code/CEL, it isn't bad enough that emissions are affected. You could install a new o2 sensor, it may help, it may not.

If you have over 50,000 miles, it is recommended.

I ran mine well over 150,000 miles before changing it. I got a little better throttle response, but that was the only thing that changed. I didn't get any better fuel mileage, the exhaust is still black. :lol:
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2000 Neon MTX swap with '02 R/T PCM
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