So i swapped my 3.73's to 3.08's running a 26.4 tire height (Street wheels) 27" for the track. I cannot figure out how to change it. I had the 3.73's close but i cant find how i did it and do not see the thread on how to. It says ERROR in the tire size and I cannot select undo or commitand i have no clue how to fix it. Car has a th400 with 3.08's. I can post my tune if needed

 

http://www.hptuners.com/forum/showth...-to-3-73-gears

 

i tried doing all that didnt work. I'm going to take a gps and dial it in with that doing VSS Per mile will take sometime but it will be more accurate