Re: Optimizing fuel mileage from stock 7.3
There is no question my PHP 80DD setting has produced my best mileage numbers. Granted, I have a 6spd and know how to breath on the pedal and keep it at 70-72 on the highway. At those speeds, I am getting a solid 19mpg on the highway.
2002 f-350 PSD, 4x4, cc short bed, 6spd, ccv mod, airdog, AIS filter, isspro ev and scangauges, detroit TT, ITP boost annihalator, ITP RR, bellowed up-pipes, ats housing, turbomaster, 3.5 dp magnaflow, very happy with ultra smooth and linear PHP 50t, 80DD and "whisper" tunes.