Evo all installed on 2018 challenger throws check engine light

Question

After installing my evo all with t harness the 3x lock starts the car but throws on my check engine light. When I scanned for the code it show no active code, but the lights on my dash. I'm not sure what's being done wrong since I can't locate a code to reference anything to.

Answer 1

you can try flashing to 74.18 if available with your device, if not 74.22