I just finished a 99 greddy gsr turbo, i'm getting CEL code 71 72 73 its the mis fire codes, i have tried a 96 ecu. I have tried to re-wire the blue box i tried almost everything... this is a bitch... i spoke with greddy several times the paramiters were off on the box the first time so it was sent back then i got it back an the seem to be correct, i need some help.. i spoke with greddy they want me to go down there to see what's up but i would rather try to fix this without them.... i think it could be the fuel rail because the # 4 cylinder is right there next to the rail an its mot getting a misfire. i'm about to say **** it an dissconnect the light ...
_______