i have hondata s200 programed to run bc stage 2 cams, i/h/e, stock bottom etc..now my friend wants to use my ecu on his gsr, same set-up besides the cams, he has stock cams and i dont want to mess with my ecu, will his car run fine i mean will cause any harm to motor if he uses my ecu?

 

it'll probably just run like **** and/or rich