Contour Enthusiasts Group Archives Forums General Group Buy Pro-Flow 75mm for all Duratecs

i'm almost there but.... 1.for those who are far from being car experts (me), how do we know if it is calibrated correctly to peak performance so that we are getting what we paid for and 2.will they re-calibrate it if need be at no cost? i realize these may be dumb questions but hey, if you don't ask, you wont know! thanks.