My e revo dont have the snap off the line!!

[BrianG]

Not unless it was an older one (about 6 months old or more). Besides, 5s on the 7XL would spin that sucker too fast and heat up. 4s is perfect for the 7XL. Hmm, if you are using the two speed tranny, you should have No troubles at all. What is your spur/pinion tooth count?

You could also hook the MM to a PC and check your settings. You could have the start power turned down too low or something. Also, check your radio EPA and/or recalibrate the MM to the radio. The ESC might not be seeing the full range throttle signal.