I'm so far impressed w/it. I see what people are talking about when they say it smokes! I'm sure this has been asked before but which level for the best MPG's should I be using w/out a load & which one should I use for best MPG's towing about 10K lbs. TIA

 

Also, does it do boost fooling from the factory or do you have to download an aftermarket turbo program?

 

I use level 3 for applications like you. To get higher boost you need the aftermarket turbo program.

 

So, level 3 for best MPG's unloaded/loaded. What kinda mpg increase are you seeing.

 

I did not see a mileage increase...but it did not decrease with the extra power either.

 

I've got a simple question on the Smarty...when changing software (i.e. mild to wild TM) do you have to return to stock first? or can you update smarty with another software version and then load that right onto the truck?

 

You DO NOT have to return to stock before loading new software