You can tune many aspects of off throttle decel and recovery besides the programing that has the ISC (Idle Air Control Valve) stay open.


ISC Dashpot Clip
ISC Dashpot Decay Rate
ISC Drive Idle Air (tune out stalling from a BOV or oversized MAF )
ISC Neutral Idle Air (same out of gear)
Crank ISC Duty Cycle

Here are a couple screen shots of stock XGT1 code...






2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.