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black puff out of the exhaust at wot

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Old 12-10-2011, 02:27 PM
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Default black puff out of the exhaust at wot

hey guys i havent went wot on my truck for a couple of days.. so during the night there was a car behind me on my right where my exhaust exits.. i floored it from 20mph so it went back a gear.. when i looked on my right mirror i saw a puff of smoke coming out, it was more like vapor so seems like it had a form of liquid too.. i tried doing it again and it didnt do it. any ideas?

Last edited by supercharged680; 12-10-2011 at 02:35 PM.
Old 12-10-2011, 03:10 PM
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Maybe running too rich?
Old 12-10-2011, 03:59 PM
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no the afr is @ 12.5-12.8
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