Review on Enhance Performance and Disable Auto Start Stop with S1000 DiabloSport Sprint AFM Module by John Brouillard

Bought this for my 2009 Silverado 1500 because I had this lag problem going from 4 cylinder to 8 cylinder when I decided to switch . So far I've only used it for a 20 mic ride home from work and it did what it was supposed to do. I turned it on and waited for a solid red light and everything was fine. The truck definitely drives better on the freeway and off-road. I can say that it shifts/downshifts smoother and has more responsive throttle response off-line and in cruise. No more lag behind AFM. Time will tell if it will hold up and if it continues to work, but for now I would recommend it to anyone. Update 2/15: I've been using it for 5 days and haven't had any problems at all. I left it plugged in and had no battery drain issues from what I've read in some reviews.