Hi all it's been a long time since I posted here. I've gotten the xcal2 from mike about 1 1/2 years ago and love the tunes. No problems truck is running awesome. I have a question for Mike or someone else that might be able to help. I'm finally getting the 2.5 AS leveling kit with the 3 inch AS rear leveling kit. I'm going to be putting 35's on my truck with the factory rims. I currently have 255/70/17 on there now. My question is do I need to get all new custom tunes or can I just adjust for tire size with he Xcal2 myself. I eventually want to get down to Mikes new dyno and get my truck on the dyno with the new lift and tires, but it might be a while. I'm hoping I can just adjust for tire size without getting new custom tunes right away. Again any help would be greatly appreciated. I know that's a big jump in tire size and my speedometer will be way off, my buddy got a bigger lift with the 35 tires and his speedo was 9mph off.
Thanks for any help.

Ski

 

I just purchased xcal2 from troyer on wednesday 14th. I'm running stock in summer and 35's in summer. They told me you have to find out revolutions per mile. You can get that from the manufacture. then program it in options menu. Mike or Anita at TPcan help you with that.