Shift Kit for better MPG?

[NateB133]

Alright, I have a stock 2003 explorer with the 4.0 v6 and reg sized all terrain tires. I'm commuting on the highway to school maybe 80 miles a day 5 days a week. I'm getting killed on the gas!

I have a friend who has a 02 Tahoe with a shift kit, driving it nice he can get 23 in the city.

I was wondering if there's something like this I can do to my explorer that will get me better mileage.

I'm also in a rush most mornings, so I'm usually in the fast line doing a steady 80mph, which I know doesn't help.

Any knowledge or ideas? Please let me know.

Thanks.

 

[Willard]

Shift kit won't affect gas mileage. Your best option is to slow down. 80 mph in a moving brick doesn't work well for mileage.

 

[zerodevil]

the shift kit will just make it shift smoother. Slow it down to 65 mph for the best fuel economy...

 

[fr0st m0nkey]

Gotta call BS on the tahoe.

 

[zerodevil]

wow... me too... is your city down hill at 55 mph both ways? Lol.

 

[DevilDog1502]

I disagree, My wifes 2004 tahoe Z71 averages 23 in the city and 27 on the highway. But it has a computer reprogrammer, cold ar intake, throttle body spacer, performace Mass airflow, headers and exuast. Electric cooling fan from an Cadilac Escalade and a pretty little lady who does not really push the accelerator down very hard very often.

 

[zerodevil]

id love to see a 5.3L tahoe get 23 in light to light traffic. i frankly cant believe a word of that.. i drove a single cab short bed 5.3L 4x4 silverado 2007 and was lucky to get 14 in town....and it weights quite a bit less than a tahoe.

 

[storlied]

Shift kit won't help your MPG but it'll sure make that rush to work funner, I enjoy mine.

 

[Blee1099]

Thats a 60% increase.. No way in hell a shift kit would increase fuel mileage to that point. Someone numbers are way over inflated.