set up for gm 90 used with gm 13.5
 

anyone know of a good speedo set up for gm 90 and gm 13.5 in a 10th touring car. i have a set up but doesn't seem to keep up with other gm and tekin's.

Which ESC version?

2010 thinks the firmware is 12.2 need to upgrade it to 13 but can't seem to get the upgrader to work.

12.2 should be ok. As a solid base setting, the standard mode 9 should work well.