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Discussion Starter #1
i have been noticing that the borla exhaust has black deposits at the bottom of the tips, is this normal or does it tell me i am running too rich? it just get annoying to look at everytime i go to my car, that all!!
thx
 

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It could be that you're running rich. Or....if you're running test pipes or maybe HF cats, those test pipes are not cleaning up the exhaust as much as the stock cats and therefore spewing out some pollutants = black poo poo on your pipes.
 
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