Hello guys im new to this i just bought hp tuners because im tired of taking it to a shop and get it tune so decided to tune it, i have an ls1 with a cam, cai, 2800 stall, i follow the steps of the idle tuning it help the only thing is that sometimes when i put it in reverse the car dies, what can be wrong with it? The car still have stock manifolds and the catalytics. Thanks in advance...