I'm sure that I am a complete idiot for asking this question, but I really do need some help. I have done some searches on this site and I am seeing that people are saying that there is a difference in the Apexi Power FC for EP91 and EP82. Does that mean that the actual computer is diffenent or just the harness? Someone told me that the Power FC can be used on any car if you have the right harness. Is this true? I am only asking because I already have a Power FC from a Toyota MR2 and would use that with an EP91 harness (if possible).