Because the map in the ECU is NOT for that MAF. The CONSULT won't complain, but a tailpipe emissions test would show a problem. Not to mention MPG and driveability.HaulinSentra said:why do I need to get my ecu re-done?
I've had it on for a couple of days and it works a lot better!
I even had it hooked up to a NISSAN consult and its working great??