tnt-r to tnt

[blackdieselram]

I'm running tnt-r right now but want to see how much difference there is between it and tnt revo at the track. Does anyone know if I have to put it back to stock before I load tnt or can I go straight from tnt-r to tnt?
Thanks

 

[Bob Wagner]

david there is no need to go back to stock and your tntr wont work if you do that too. your ecm will be updated and the tntr will be an older calibration. so beware