Went with the older Classic FAST system when most people didn't know what EFI was on an older car. Its been 11 years since my first system, and I still love it.....I did a lot of research and calling around before purchasing. I can tell you at the time I purchased mine, only a couple of guys in the USA knew how to go through it and work it out, and I was better than one of them at it. Since then I have done my own tuning.
