Odometer question

[snailexpress]

(08-12-2018 )Explosia Wrote:  My odometer is reading less than a mile after a mile is traveled. Goodyear says my rpm for my brand/size is 508. I look on insite and it has 518 entered. This doesn’t make sense.

Secondly, I bought my truck with 406k on the ecm with the odometer at 344k. So this has been going on for a while. How does the ecm calculate mileage if the settings are incorrect?

*i would like to thank rrod for helping me get insite up and running, dude has been awesome*

In Insite section Features and Parameters you can set parameter mile revolution for tires you have. Also in this section parameter for tire wear calculation to keep odometer correct.
ECM uses speed sensor pulsing, revolution/mile parameter, rear end ratio numbers to calculate speed and distance.