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The one and only time mine has blew out a bunch of black smoke, was when it wasnt fully warmed up. I throttled it pretty hard to get out of the way of some heavy traffic coming at me. I looked like I was driving a pre DEF equipped diesel. Hasnt happened since, but I dont goose it when its cold. And my exhaust tips are always dirty with black soot. My car is all stock.
Same black dots stuck on my cars rear as well.
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2018 ZL1 Bright Yellow, A10, PDR, sunroof, carbon hood, and dash- sold
2020 2SS A10 sunroof..shock and steel special-traded
2015 commemorative vert 2ss
Last edited by sengli; 03-23-2018 at 12:45 PM.
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