i swapped a 97 JDM ITR motor in my 94 GSR and everything was working fine and running smooth until my VTEC decided to stop working. i'm not throwing a CEL unless i'm in gear and let the motor rev down on its own. that's the only time it throws a CEL but other than that it drives and idles fine. the only mods are a test pipe and N1 exhaust. stock motor with the ECU it came with. my oil level and oil pressure is fine it's running at normal temps and i changed my oil about a month ago. autozone can't scan my ECU because their scanner is for vehicles from 95 and up and the chassis is a 94. i'm clueless as to what it could be.