He changed a motor out of his 94 gt was a 3sfe and put in a 5sfe, all is good , until its time to register the car and go through emissions, he failed with high nox, and his cel is throwing a 25 for a code, too lean, he's monkeyed with alot of the obvious fixes, but is still throwing the code and he is wondering now......................
does he need to change the ecu????
could the old ecu for the 3sfe 2.0 be causing a high nox condition with the 5sfe 2.2 ???
Thanks for your help.
does he need to change the ecu????
could the old ecu for the 3sfe 2.0 be causing a high nox condition with the 5sfe 2.2 ???
Thanks for your help.