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-GDE HOT Tune
-GDE Trans Tune
-2.5" straight pipe
-Transgo Shift kit
-Euro Torque converter
-Elephant Hose Mod
-Lift Pump
-wheel spacers
-stock tires
GDE tune could get you as much as a 10% to 15% bump depending on how you drive it. I believe a lot of the same features from the eco tune are in the hot tune, but if you drive it like you stole it, 0% improvement.
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how about if I add to the same list a 2" lift ?
then if I add 31" tires?
2" lift puts that rolling box, higher in the wind, you can expect a reduction in fuel mileage
31" tires are going to change the speed that the tranny shifts at, which can have a negative effect on your mileage because instead of being in 3rd at 45 mph, your in 2nd. Also those tires are likely heavier than the stock tires.
I switched from 31" 245x75R16 MTR's to 32" 235x85R16 AT's last year and dropped about 15 pounds per corner, reduced the contact area, improved wet and ice road traction, and improved my fuel mileage. Just specifying 31" tires leaves a lot to be specified. Lots of other factors.
If mpg is your goal, lifting and larger tires are not going to help, but it will make it more capable by giving you higher clearance and larger tires. Both good things if you want to get off road.
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2005 CRD "
Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.