So I'm having a nuisance light throttle hesitation that I cant figure out. It only happens at a very light throttle input and really only noticeable from a stop. Also worse in reverse for whatever reason. Screen shot is from the log backing into my driveway. I can shift into reverse fine but as soon as i give the slightest throttle input it will stumble then take off.
reverese stumble.png the rpm drops to 3 hundred something then recovers also attached is log and tune.

2007 5.7 with HRT stage 2 cam

Appreciate any input as to a cure.


FEB 6 stumble.hpt
pt hesitation.hpl