I did two 60 miles tests on cruise at 70mph. Using the DIC, I got 18.5 without the boost stick installed. 16.0 with the boost stick installed. Truck empty both ways.

Questions:

Does the boost stick affect mpg's this much?

Does the boost stick affect the DIC and I am not really getting this low mpg's?

Yeah, I like the power, but not that much at $3.20 a gallon.