Harry's GPS Suite Forum

Hi there!

I'm wondering if it is possible to adjust or offset the RPM scale manually?
My car's rev limit is at 7800 rpm and I regularly shift at that point. However my OBD II sent cca. 700 rpm less.
So it looks like on the video I change gears at 7100 and not 7800. Thanks for any tips.

Not really. You can export laps to .hlptrl and add some scripting to multiply rpm values and import it again - but this requires a minimal set of programming skills.

- Harry

Do you actually hit the rev limiter? Could the tach on your dash be a little optimistic?

While driving down the highway at constant speed, have HLT in Real Time/Engine mode and compare the RPM's displayed in HLT with your dashboard display. If you know your tire circumference, you can calculate the RPM's from the speed and overall drive ratio. I would use GPS speed at constant speed rather than the speedometer, which is set by law to read a little high.