how to tell what calibration fmu you got.
probably a Vortech.
if i buy one off ebay and the sell does not no.
thanks

 

throw it against a wall

 

you can check vortech's website and they have it posted but if it is not a actual vortech fmu and you want to switch out the plates you will have to grind a little of the interior of the rings for lower ratios...i had to do this on 3 different brand fmus

on a side note though I have run a sfmu with vafc and car ran ok i finally broke down and got turboedit and car is much easier to tune and trouble shoot not to mention I have many more options for adjustment compared to using even a sfmu...

just giving you some advice so you don't do what I did which was basically waste money and time...which will cause you major frustration...