I've been running my L4 on asphalt with Reedy 19 turn motors all summer. Electronics are GT7 and Spektrum. Car has been working great. Last weekend I strapped in a 12x2 just for fun. After about 7 minutes my car "wigged" out on me. I did not notice any dumping but I lost control of the car. The steering went nuts as well as the throttle. Checked things over and could not find any obvious problems. Motor temp was about 158. I ran the car again for my next heat. Same thing after about 7 minutes.

I suspect that maybe I need to run a receiver pack with a mod motor or maybe I have an issue with my speedo or Rx. Can anyone steer me in the right direction? (no pun intended )