who has ran regular and prem with the hypertec and is there a noticeable difference between them to make it worth the extra coin. and if i were to switch to premium setting do i return to stock or just set it to premium .

 

I don't have one yet. But speaking from experience modding other vehicles, it all depends on how you drive, and what kind of area you drive in. If you have a lot of hills, then you will most likely notice the difference more than if you live in the flats. If you have an automatic, the biggest difference will be the shift points.

 

Has anyone tried this yet?? I was thinking of switching to premium for towing to see if it helped with power.

 

There is a tow setting on the Superchip. Try that and run reg.