I recently put a 6.0 in a v6 truck. It was cable throttle of course. I converted everything to Drive by wire. I have noticed even at idle my RPM's are off substantially. At idle it will show 1100-1200. HPTuners will be showing me 750-800. When I accelerate the tach will just up to 3000 (HPTuners 2000). If I go full throttle it just stays above 6K. Is there something I can calibrate to get this accurate. It is just annoying having something there that doesn't work that should. Also, if I am on the interstate it will also show 3000 when I'm only at 2000. Any thoughts???

 

What do you have the tach output resolution set at? (VCM Editor>engine>general) How many cylinders, what engine type? Those are the only settings that I know of. I wish HPT had tach calibration so we could replace the face and make them read 7000 or whatever. Maybe in the next release. In fact, I'm going over there now and ask.