I bought my Pio back from UK, but the tech (very abrupt, rude and unhelpful) guy, said the don't have this feature on the NZ Models (PDP-428XG).
But, I looked at the PDF spec sheet from the Pio NZ site and it has the ISF Calibration Feature on there, so I figured, the TECH, was unaware of this feature or just plain lazy...geez thanks pioneer
anyway, I know there are other brands/models that can be ISF Calibrated, so does anyone know of a certified calibrator?
cheers