Hello I just got my hp tuners today looking at my tune on my hot rod.
I told them my tire size when they deleted vats and set it up for my car my tire size is 275/40/r17 and I took the gear ratio and tire size trans revolutions / mile. Sayes 2557.9686 mi-1 .
When I put the tire size in the tire calc it sayes 25.7
And gear ratio is correct at 323.
I got the program because every since I got the car running I?ve always have a lean code on bank 1 and 2 and I have no air leaks