dumb ?

Originally posted by nonovurbizniz
fuel and igntion maps are stored in the "chip"...

which is not in the ecu?

point being if you put a d16y7 ecu into a car with a b18c5 motor (providing the obd capadability was currect) it would not run as well without changing the ecu (or chip) to acomidate the new motor, getting back to my whole the ecus issued with twin cams ARE in fact differant...