Hey guys just wondering if there is somthing on the ecu to set the rev limiter for a 4agze, as mine is only reving out to 5500rpm when it should be reving to 7500rpm.... so could it be the casue that the person who owned the engine before me had it set lower??
your problem would be more related to factors OUTSIDE of the ECU. look at your ignition system, fuel delivery etc etc and if it varies from anything other than factory, find out why/what