What is the difference in the JDM spec motor and the US spec motor? Injectors , turbos?? please explain
If you wanted to make it exactly like a US spec one I think you would need to change out the turbos, injectors, and cam. And the jap spec injectors have a different impedence, so you would have to use a resitor pak for that. Not sure what other differences might exist.SupaDupa said:so what would it take to make a JAP spec US spec.. Just the bigger injectors??
I am pretty sure the rail is the same for both cars just the injectors are different.Usual R Suspex said:Sorry to change subjects a little bit but,
I have a US Supra with a J-spec motor and a t-78. Stock fuel by the way and the jap-spec fuel rail.
I didn't put the stuff in, I just bought it that way.
Is there anything I need to know as caution or any gains by using J-spc motor? I am keeping boost to 10psi.
Can I easily swap the J-spec fuel rail with the U.S. spec or just the injectors?