Does anyone know the default PPM that New Vintage 1969 series gauges are looking for without doing their calibration by a driven mile. I would like to just change the output pulses from the pcm to the gauge via HPT output pulse per mile or the correction factor. instead of the driven calculation. There must be a default pulse per mile that the New Vintage gauges default to before programming, it is reading 70mph at the gauge and 30mph on the HP scanner. I have already corrected the HP file for the tire diameter and gear ratio. New Vintage is was unavailable today.