Did the CEL come on while you were going uphill under light throttle? If it did, that's common with the hack. Since the MAP voltage varies about 40% from the reading that the barometric sensor in the ECU puts out, the ECU assumes the baro sensor is faulty and throws a baro sensor code(13). This usually happens under light-throttle, going uphill. Or, if you're redlining frequently in a short period of time, it might be a 22, which is the VTEC solenoid.