Hi I have a 1984 300zx turbo that I am thinking about buying an universal aem ecu for and it comes with a harness but it doesn't have all the wiring with it I don't know if I could solder in the ecu to my cars wiring or if I would have to rewire the entire car so what would I have to do?

 

Is there a reason you want AEM over Nistune / JWT / Megasquirt?

 

I just trust aem more but if nistune is good (I havent heard alot about it) then I will use it.