#81626, "RE: Vortech FMU" In response to Reply # 0
i have the vortech fmu, this one you are looking at is the super fmu...the difference is a couple hundred dollars and better tuning capabilities. with the fmu, it raises fuel at a constant rate, the super allows you to tune the rate a little bit. it is probably the best thing to get unless you want to spend a lot of time and money on e-manage.