Join Date: Dec 2008
Location: Spokane WA. area
Thanked 990 Times in 755 Posts
Jammin60 said it best. To answer Tooloud, the bullydog programmer is not custom tuning to your trucks strategy coding like an SCT device is capable of, and by keeping it in towhaul your increasing average rpm's thus using more fuel. Egr deletes need remapping of the boost/injection and shifting curves to run correctly. Also, winter fuels and engine temps can drastically effect mileage. In winter my mileage drops considerably, due to the fuel and the trucks operating temps that are too low.
Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)