Does anyone know how to recalibrate a VSSB for gear and/ or tire hight changes. The application is a '93 chevy pk. It already has a aftermarked VSSB by Superlift, but it did not calibrate the signal accurately. I have heard that this can be done with some soldering of resisters in the VSSB but have not been able to find any details.

gdkng

 

What's a VSSB - vehicle speed sensor buffer? If so, I'm not aware of any method that will adjust its output ratio. An aftermarket recalibration unit, from Cyberdyne, for example, may be used, or the VSS drive or driven gears may be changed to recalibrate the number of pulses generated per mile - the GM standard speedo & ECM input is 4000 pulses per mile (cruise control input standard is 2000 pulses per mile, however, the cruise input is not critical, as it is used in a relative comparison).

Tim