Is there anything I can use to correct my tire size until I decide on which tuner I want to go with.

I have some 295/70/17s (33x11.50) and @ 70 Im running about 76 per GPS.


Also will the uncalibrated tire size hurt my mileage. @ 80 I used to show 2000 rpms and now @ 80 (gps) Im showing about 1800 rpms.

Superchips tire paq or whatever its called will do it without the tuning.

I just saw that --- hell its only 50 bucks less than the flashpaq is right now.

That makes no sense. I was hoping the Tech 2 would do it but GM says no to the diesel but you can do it on the gassers. What sense does that make

Grab a Predator for $300 Bucks, Or Hypertech. If you looking for a MPG gains and good power. Im running the Predator on 85 right now. Im liking it, I'll have some MPG Figures soon.

I was hoping the Tech 2 would do it but GM says no to the diesel but you can do it on the gassers. What sense does that make

Yeah, my stealer "tried" to use the Tech II to recalibrate mine for 256/75/16 but it actually made it worse off!

If someone you know has EFILiveyou can do it $100 (license fee). Than you can tune later