Really need help fighting a coast down stall. 2014 Camaro SS Auto. It has a heavy cam, seems to have high overlap (do not know specs, was installed when I bought it). I wants to stall a coast down when coming to a quick stop. If it doesn't stall, it wants to surge forward. Has bee tuned by a tuning company twice. I have tried a vast amount of suggestions. Calibrated MAF, added air, removed air, added spark, removed spark, raised idle, raised min air, played with corrections. Not dice.
It has the aftermarket cam, DOD/VVT delete, LTH, K&N kit, and cat back. There are no vacuum leaks, plugs and wires are new. Note, LTFTs were reset before this scan. Please help. Im already out a ton on this, I need this corrected.