Reviewed By steve f (LAKE CHARLES, LA) Reviewed for a 1999 Ford F-350 —4/6/2018 9:02 PM
haven't tried economy setting on highway yet to see if mileage is better and I haven't tried to upgrade tunes online, I was told there aren't any upgrades for 7.3, but max setting for performance is sufficient power over stock, correction in transmission shift points and firmness are also better than stock.