Reviewed By Daniel R (Fullerton, CA) Reviewed for a 2002 Ford Ranger —12/16/2012 8:59 PM
Very easy to program and use. Programmed using out-of-the-box "Performance" tuning setting. Smoothed out shifting power curve dramatically. Gas mileage up from 13.5 to 15.5, so far, w/ 4.0, EFI V6, all city driving - still improving as I adjust to the added performance. Waiting for a road trip to see highway mileage improvements. Added K&N Cold Air Intake at same time too. You can actually hear the engine "breathe" now, (but it's hardly noticeable).