Chuck N.

Very noticable improvement in average mpg!!! Prior to chip, 17mpg +/-. Put the chip in just prior to a road trip. 20+mpg after almost 11 hours of highway driving (692 miles).
Similar overall city/highway combined mpg if you resist the urge to get on the gas, off the line.
Noticeable improvement in low end pick up/acceleration as well. The chip arrived as promised, install couldn’t have been any easier.
Not sure how all the magic of this works, but it certainly does!