Originally Posted by mrphotoman
Try unplugging all the harnesses on the ecu then plugging them back in. It may just be one of them are not seated properly.
That's what I thought originally and they seem to be plugged in correctly.
Originally Posted by 240M3SRT
DO NOT spend $3000 on the ECU, if push comes to shove buy one used. Is the CEL hurting performance in any way?..it shouldnt be...worse case scenario ya drive with it on. An ugly orange light comes on anyway when traction control is turned off.
The car was running pig rich which affected the top end...