I am wondering is anybody has any knowledge about the Mileage XS download for the superchip. What exactly is it suppose to do to make your mileage increase. I just downloaded it to my superchip and programmed it into my truck. All I noticed is the takeoff is a little bit slower.

 

I found a little more power and 1.5 mpg increase.

 

Basically it is a less agressive program than the 91 and 87 octane tunes which specifically are built to provide more power and towing ability than mileage.

We tune the Mileage XS to help conserve fuel while still fine tuning your vehicle which has been shown to net small power increases as a bonus.

Scott