Hi guys I have three ECU's which I received with my car (1994 gx converted to RS running gear), the three ecu's are a standard rs jap spec, a fat sports chipped early wrx ECU, and a bozz speed chipped sti type RA unit. I was seeing what would be a safe combo to use with the current setup (standard injectors, vf29, top mount, 3inch exhaust) as I don't want to be using the bozz speed or fat sports ECU incase they aren't suited to the standard (380cc?) injectors and causes a lean-out condition.. All I can see that's different with the fat sports is that it's got the limiter dropped from 7500 to 7000 with spark cut as opposed to fuel cut because the turbo sits at full boost in neutral p.s I only tried this once haha! And the bozz speed seems to be no different to the std unit other than the fact of no boost cut or speed cut. I've got the numbers of the ecu's if that helps the situation at all?

Thanks heaps if anyone has any info on this!

Kaya.