When uploading the tune which does the car respond to. I have settings for 3:23 - 3:55 - 3:73 - 4:10 ratios and I have the ability to adjust the revolution per mile for the tire size.

I guess my question is if you set the RPM for tire size does that over-ride the gear ratio selection? Or is it even necessary to select the gear ratio when you set the RPM for the tire size?

 

To correct the speedometer, it needs to know both the gear ratio and the tire size.

 

Thanks Don