Ok so heres the dilemna, I've got a f-con meant for 89-92 turbo supras, I own a 87 turbo supra. The harness I need is a the TP-8, I currently have the TP-14. This doesn't trouble me very much because I can always splice in, however, my main concern is, what is the difference in rom's between the two? Is there a difference? Will the 89-92 rom work on my 87 turbo? Now I've already tried talkin to HKS, and to be honest I could have gotten more help from a trained chimpanzee. I've also called numerous HKS dealers off there website and still couldn't find anyone knowledgeable on the f-con. Really hopin I can finally find someone among the supra gods thats knows what they are talking about or can at least steer me in the right direction. Any help as always, is appreciated.