Does anyone know the best set up to gain more mileage on this truck? It is lifted with 35s x 20 and AFE Intake.

A local performance store advised of changing gear ratio to 4.56 and adding a Superchips. What do ya'll think?

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Prompt response appreciated, as I would like to do any modifications before Thanksgiving week in Glamis, CA. Thank you.

 

Gears are a start,I'm not a fan of superchips,get theEFI live

 

yes gears would help with the milage, stock the truck comes with 3.73 gears.

most of the tuners will add mpg gains.

With the 4.56 gears in 6th gear you will be doing 75mph at 2000rpm.


I used the Calulator on the site to figue that out.

https://www.dieselbombers.com/calculators.php

and the alison gear ratios.

Reverse-- 4.49
1st gear-- 3.10
2nd gear-- 1.81
3rd gear-- 1.41
4th gear-- 1.00
5th gear-- 0.71
6th gear-- 0.61 (available on 06 and up Allison)

 

Take the lift and tires off! Probably a programmer of some sort, but dont expect a miracle!

 

What kind of mileage are you trying to get?

I am getting about 17.5 on the highway with 35's and an 8" lift. I get about 15 if I only drive in the city.

 

Do a DPF delete typical gains are 3-4 mpg. I have seen 4 mpg increase on mine and other first hand. With the larger tires and wheels you mileage increase would be closer to 3.

Let me know if I can help with any questions.

Tyler
MPF