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xxrammudderxx 03-27-2013 06:27 PM

2000 ram 2500 terrible gas milege
hi im new to the forum i got a 2000 ram 2500 360 v8. i have a kn cold air intake, 3 inch exhaust no cat with a flow master 40 series, 37 inch tires, built tranny(billet tc high performance clutches, shift kit) and 4.88 gears. i understand its a lifted truck and it will never get good fuel economy but i think i should be getting a little more than 4 miles to the gallon any ideas? i was told the gears were the answer but i installed them and things don't seem better.

Kenderik 03-28-2013 01:45 PM

Whoever told you the gears were the problem was right....the closer you get to 1-1 the worse the fuel mileage....I would suggest putting a little shorter gears in it...maybe some 4:11 gears would do better for you

RamTech 03-28-2013 02:32 PM

Has your speedometer been calibrated to account for the tire and gear changes?

xxrammudderxx 03-29-2013 08:00 PM

how would i calibrate the speedo

RamTech 04-01-2013 09:42 AM

You'd need a custome tuner capable of calibrating for different tires sizes and gear ratios.

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