Ford Powerstroke Diesel Forum

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-   General 6.0L Discussion (https://www.powerstroke.org/forum/general-6-0l-discussion/)
-   -   6.0 MPG with lift and 37’s? (https://www.powerstroke.org/forum/general-6-0l-discussion/1367769-6-0-mpg-lift-37-s.html)

Ryan05KR 08-22-2019 10:43 AM

6.0 MPG with lift and 37’s?
 
Just wondering others mpg’s? My edge monitor says my average is 10-12. Truck is deleted but not sure on tune. I’ve heard people talk about looney tune getting 18-22 but with 37’s and 22-14 wheels I doubt it. My truck mpg’s is at 10.6. 😢 Any advice would help

White_Buffalo7.3 08-22-2019 10:54 AM

Lots of people i like to claim crazy MPG numbers. They fit the lifted truck stereo type :)

JustinOOO9 08-22-2019 11:22 AM

Quote:

Originally Posted by Ryan05KR (Post 16321307)
Just wondering others mpgs? My edge monitor says my average is 10-12. Truck is deleted but not sure on tune. Ive heard people talk about looney tune getting 18-22 but with 37s and 22-14 wheels I doubt it. My truck mpgs is at 10.6. 😢 Any advice would help

Edge mpg doesn't work on numerous trucks. PLus with larger tires you need to calculate the difference and multiply your odom to get the corrected distance. with 37s you are driving farther than your odom is recording.

my current situation: truck came with 265/75r16s and I am using 285/75r16s. I now have to multiple my odometer by 1.038 You can google tire size comparison to find the size difference and multiply it. so when I drive 280 miles I actually drove 290.64 miles. Not a big difference for me but for 37s.... my tire is 3.8% bigger than stock.


quick possible example for you.

lets say you have 275/70r18 stock and a 37.13.5r18 new that's 11.4% bigger so you multiple that to your odometer and find how far you really drove. my guess is 14-15ish. its what I got on my 04 and 06 f350s with 35-40in tires etc. I saw zero difference going to a 35 I was young and mad lol.

Heavy_GD 08-22-2019 11:24 AM

22x14 and you are worried about MPGs?

I'd say go for the smiles per gallon and drive on.

Ryan05KR 08-22-2019 12:50 PM

Bought the truck with all the upgrades. 22-14 would not have been my choice but looks awesome. I drive a lot of highway miles and was just wondering if I could make some improvements. Archoil fuel additive work?

twood71 08-22-2019 01:00 PM

I get, crap I done forgot what I get?

well I know I get better at 60mph vs going 70mpg in my 6.0

I just did a trip in my 6.7 Monday to Nashville Tennessee to see Iron Maiden, got 18.2 there and back was 18.5. must been the wind in my back lol

Side note for Down Town Bridge arena Nashville Tennessee, not set up for SuperDutys'

twood71 08-22-2019 01:03 PM

Quote:

Originally Posted by Ryan05KR (Post 16321359)
Bought the truck with all the upgrades. 22-14 would not have been my choice but looks awesome. I drive a lot of highway miles and was just wondering if I could make some improvements. Archoil fuel additive work?

Bub I had a Ford Ranger 3.0 that got 14mpg, :grin:

DesertDiesel 08-22-2019 01:11 PM

Quote:

Originally Posted by JustinOOO9 (Post 16321315)
Edge mpg doesn't work on numerous trucks. PLus with larger tires you need to calculate the difference and multiply your odom to get the corrected distance. with 37s you are driving farther than your odom is recording.

my current situation: truck came with 265/75r16s and I am using 285/75r16s. I now have to multiple my odometer by 1.038 You can google tire size comparison to find the size difference and multiply it. so when I drive 280 miles I actually drove 290.64 miles. Not a big difference for me but for 37s.... my tire is 3.8% bigger than stock.


quick possible example for you.

lets say you have 275/70r18 stock and a 37.13.5r18 new that's 11.4% bigger so you multiple that to your odometer and find how far you really drove. my guess is 14-15ish. its what I got on my 04 and 06 f350s with 35-40in tires etc. I saw zero difference going to a 35 I was young and mad lol.

Wouldn't the odometer be correct if the speedo is correct via changing the values on the ECU for the larger tires?

JustinOOO9 08-22-2019 02:20 PM

Quote:

Originally Posted by DesertDiesel (Post 16321373)
Wouldn't the odometer be correct if the speedo is correct via changing the values on the ECU for the larger tires?

The SCT/ BUllydog, superchips, hypertech, banks, diablo,edge insight and power programmers do not change the speedo/odometer on the 6.0LS. They even have an adjusted speedo pid you can view because of it. You would need to visit ford or someone with IDS/AutoEngoinuety to have your ecm reflashed on a stock ecm then reprogram it with the tuner for power. For some reason 99% of tuners/programmers/chips don't change the speedo/odom on powerstrokes. Something I went crazy with until I found forscan.

if you read here forscan can change the abs module setting to accommodate larger tires. However It worked for me half way... It did correct the speedo/odom but it changed the shifting in a bad way. It made my OD come on way earilier than normal and towing was a nightmare so I live with calculating my odom but I stopped years ago.

heck even superchips and hypertech sell a speedo reprogramming kit for the superduties but they are not power programmers etc.

joe blow 08-22-2019 03:00 PM

10-15 I get if I don't mash the throttle while tuned, granted I am geared to 4.56's and at that tire size (37's on 20's) I am a tad lower than stock.

Towing with a tow tune, I'd be lcuky to get 8-10 when towing a large trailer.


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