i had bought a 6 speed harness a while back thinking it was a us spec but i just realized that its a jspec beacuse the connecters did not fit the us spec injectors. my concern is if there are any diffrences between the jspec harness and the us spec besides the injector connecters and maf. is there a way to wire the maf into the j spec harness a way to put use to the j spec map sensor? any help or info would be greatly apreciated. i have phil's manual and i checked all the pin out puts and they seem to be the same color wires and the location. thanks in advance.

 

I tried using the jspec harness, but there were too many issues to make it worthwhile. Obviously you have to extend it atleast 10-12 inches for lhd, wire in the mas somehow and also wire in an injector resistor plug to run usdm low impedance injectors along with alot of small plugs that are different such as the injector clips, etc. Now if you wanted to go full jdm, ecu and all, you could. But when you go to upgrade (and you will), you will be stuck using jdm injectors and following a jdm wiring diagram for everything. So imho, i would bite the bullet and pay the $750-$1000 for new usdm harness or find a used one for less.