Thanks Dave. I followed your whole post... I've learned a lot about how GM tunes the LS9 with the E67 in the past few months.
I agree with you about DFCO. Seems like a little time can get that right -- but I am chasing decel popping, and nothing I've done has made any real difference in that. I didn't install a CASS sensor -- though I will on the next car.
My customer's engine is stock, except for the intake tube and exhaust. I'd think the torque model would be pretty close. I've got some histograms defined that I think can help me validate that, though I need a loaded dyno to make sure. In the meantime, I've increased the AC torque table by 10% to see if can get a softer response when I turn on/off the AC.
I've reduced coast down spark to reduce popping on decel and clutch in... I'll post back if I make good progress.
Last edited by parsonsj; 11-22-2015 at 08:23 AM.
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