Hello friends,
I have noticed that my 2006 LBZ will smoke black under hard acceleration, such as when the Allison kicks down while passing all them Fords . Its not a real severe smoke, but is noticable. It concerns me, since my LLY or LB7 never did smoke under hard acceleration. The truck runs/idles great all the time, but do you feel there is a need to have my injector balance rates checked, or did GM just "turn up the fuel" on these '06 models to acheive the 360 HP? Thank you!