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carbom buildup


90CRex

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i think my 95 hatch is running fine, i dont notice anything wrong. but i have a lot of carbon on my rear bumper, tailgate and window. i kno with an exhaust you'll get some but its turnin my whole rear end black...and i have a white car! any idea what it culd be? sometimes i do get a code for my oxygen sensor..cel flashes once....but it doesnt happen often

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yea, ecu has been reset. i have 2.5 catback and the tip is 4 inch i believe. dont flame too hard its x3 racing xtune exhaust....was in need of exhaust to get it tagged asap

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if you are driving more aggressively that can cause excessive carbon as well.

 

if your fuel mileage hasn't been impacted greatly I would just resign yourself to washing the car more often. if as you say the o2 sensor(s), exhaust, cat and ecu are all in good working condition I don't think there really is much more you can be doing.

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negative...its pretty dirty i havent washed it in like 2 months...been doin alotta wrenchin on it lately and havent had time. plus it needs a lil bodywork, not to mention it was flooded at one point in time(minus current engine)....maybe ill just sand it and prime it...try and get it ready for a paint job in the near future

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