I have a complicting search on the 1993 harness using PowerFC (single turbo). Some said, if I plug the PowerFC, it will power up and works some said I have to modify the wiring harness to make it work.
Can someone give me a feedback on this.

Also is there anyone out there makes an after market wiring harness for single turbo installation?

 

On a US car, you have to remove or cut the 4 wires. It's in the PowerFC FAQ which is stickied in the PowerFC forum. On a Japanese car, it's plug and play.

Nope, no one makes aftermarket harnesses.

Dale