I am new to this Forum and using HP Tuners. Does any one know how to raise my Speed Limiter on my Silverado? I have changed the setting on the Speedo setting from GMLAN to Calibration but it is still hitting the 112 mph Limiter. I have made other changes to fuel and timing and it has picked HP. It is running stronger but cant seem to get the limiter raised.
Any help would be appreciated.