I am returning my ecu back to stock from a apexi power fc, i changed them over and the car runs fine on idle but when you drive it, it missfires and has no go... And also a A/T light now appears on the dash...
MODS; full zorst, cooler, pod, stock boost.....
does this need to be tuned up.. or is it just ignition timing...
PM me please for help...