1J and 2J ECU compatibility???

Quin

Trans killer
Dec 5, 2006
1,989
0
36
33
Columbus, IN
I know you can do it the other way around...

EDIT: Meant using the 1J ECU + harness, not hybrid harness ecu deal.
 
Last edited:

mobes

Supras are never 'done'
Apr 5, 2005
719
2
18
Bozeman, MT
You could, but you'd want to run smaller injectors or some sort of fuel control because you'll have 0.5L less displacement. About 415cc on the injectors, so 440's would work. Best to err on the rich side :)

Edit:
Yeah, the ECU plugs are different. I assumed he was thinking of using the 2JZ harness.