Originally Posted by
boostedGTJAX
Hey everyone, just wanted to pot this issue im having on my 2018 mustang gt at the moment. So i have a Whipple stage 2, 3.75 pulley, E85 and just finished a TR6060 transmission swap on it. I installed a Bowler all in one harness and everything is set where it needs to be. no CEL, no wrench light at all. on the dyno or street no matter what i do as soon as i put it in gear and start rolling i get an automatic RPM limit source code " in gear limit over-speed" it wont allow my throttle to open more that 25 degrees. i attached a pic so i can show what im seeing, it would be greatly appreciated if someone could guide me in the right direction to get my car out of limp mode.