So I have all my shifts close but all changes were made without changing tire size and pulses per revolution so my vss shows only 16mph at an actual speed of about 65. Is there a way to correct this so I can get the correct speed to show up on my datalog without having to change all my shift points again? I tried using the calculator but that changed it too drastically. My current revs are at 40 and when I change to 17 (or even 16) the speed shows close to actual speed but the transmission doesn't shift. Any ideas?