Yeah, i know they operate the same way, but what i'm saying is that the voltage output at WOT between the two is VASTLY different.silverton said:AFM's and VAF's operate in the same manner, flapper doors. Is it from a mk2 supra or a mk3 supra? mk2 == 1982-1986.5. mk3 = 1986.5-1992. If it was a mk2 supra I know where a butt load of those things are. I used to own one!