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smoke on decel

961 Views 4 Replies 4 Participants Last post by  KB3MMX, 
yfz450srh
i have noticed this on the freeway when i let off after accelerating hard, and i really noticed it on my dyno runs, when i let off my truck still hazes black smoke out of the exhaust, has anyone seen this or is it something to be worried about? the truck has 230k miles on it with all the mods in my sig.
thank you
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KB3MMX
yfz450srh said:
i have noticed this on the freeway when i let off after accelerating hard, and i really noticed it on my dyno runs, when i let off my truck still hazes black smoke out of the exhaust, has anyone seen this or is it something to be worried about? the truck has 230k miles on it with all the mods in my sig.
thank you
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Reading your sig, I assume your FPRV is shimmed and not using a race plug?


You might be experiencing crankcase blowby burn off too


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