MPG's with lift and big tires - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 04-10-2009, 05:32 AM Thread Starter
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MPG's with lift and big tires

I was wondering what MPG's everyone else who has a lifted 6.0 is getting. I just checked mine for the first time since getting the lift and the 38.5 tires and was surprised to find I'm getting 14.5 mpg city, hand calculated. considering I was only getting around 16 before the lift I didn't think 14.5 was too bad. this is the truck -- '07 6.0 250 SD excab, auto w/ 10,000 miles, no performance upgrades except 4' turbo back with the cat reinstalled but no muffler. I am running 55 psi in tires. how I calculated -- since the speedo is off with the big tires I had to do a bit more calculating than normal. when the speedo shows I'm doing 60 I am actually doing about 66, wich is 10% more. when I pulled up to fill up my trip read 167 miles so I added 10% which gave me about 184 actual miles. divided by 12.5 gallons = about 14.5 mpg. how much do you guys feel I could improve upon this by getting a programmer and an intake or any other performance upgrades?

2007 F 250 superduty Highline Pkg.
10" lift-Rock Krawler coil over 4 link pre-runner system w/ Fox res. shocks all around
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post #2 of 20 Old 04-10-2009, 05:47 AM
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MPG

I'm only getting about 13 or 14 with my truck right now. I have 4" lift on 35's. My speedometer is about 5 mph off so I haven't figured out what the difference might be. I have the Banks Six-Gun w/ PDA and it doesn't help out to much on the gas mileage. Other tuners might more than the Banks. If I put it on the lowest setting and go easy on it, 15 max. On a full tank of gas, how many miles are you running with what your gauge says.

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2006 F-250. 5" lift, ICON 2.0 shocks, 315/70/17 Goodyear Duratracs, 17" Weld Wheels, MagHytec cover, 4" Banks Exhaust, AFE Stage 2, Banks High Ram intake, 6000K HID headlights and fog lights, Recon lights,Fumoto Oil Drain , SCT tuned (IDP, Gearhead, Quicktricks), Edge CTS Insight,ARP studs,EGR delete, Powermax turbo w MTW billet wheel, NUC Oil Bypass filter and Dieselsite Coolant Filter,Ford Upgraded Fuel Spring
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post #3 of 20 Old 04-10-2009, 06:17 AM Thread Starter
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Originally Posted by GAstroker2006 View Post
I'm only getting about 13 or 14 with my truck right now. I have 4" lift on 35's. My speedometer is about 5 mph off so I haven't figured out what the difference might be. I have the Banks Six-Gun w/ PDA and it doesn't help out to much on the gas mileage. Other tuners might more than the Banks. If I put it on the lowest setting and go easy on it, 15 max. On a full tank of gas, how many miles are you running with what your gauge says.
sorry, not quite sure I understand your question. if you're asking how many miles I get out of a full tank, I don't know. I never let it get that low before filling up. the computer on the truck reads about 13 mpg, but I don't trust that so I hand calculate.

2007 F 250 superduty Highline Pkg.
10" lift-Rock Krawler coil over 4 link pre-runner system w/ Fox res. shocks all around
dual BDS steering stabs
custom trac bars w/polished stainless inlay w/"FORD" lazer cut in center and flames on ends
Raptor coating on frame axles, etc.
bushwacker pocket style fender flares
Jesse James Lawless 18 X 10 chrome wheels
38.5 X 14.5 Pro Comp Xtreme mud tires
AMI Billet door handles and fuel door
4" turbo back stainless exhaust w/ 5" tips
much more to come
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post #4 of 20 Old 04-10-2009, 06:21 AM
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Originally Posted by kdskidoo View Post
sorry, not quite sure I understand your question. if you're asking how many miles I get out of a full tank, I don't know. I never let it get that low before filling up. the computer on the truck reads about 13 mpg, but I don't trust that so I hand calculate.
dude thats a badd azz truck you got. but you may want to invest in some lower gears to keep that daily strain off the tranny. It is critical for longevity. With 38s I would suggest some 4.56gears this would also help you increase your MPG

'07 F-250 PSD 4x4 . S&B, 5" exhaust, zoodad, blue spring, '03 Turbo, 6.4 starter, 2.5 f/coils, adj Trac bar, 2" r/add-a-leafs, egr delete, DC 185 alt, Procomp shocks, SCT SF3 tuner, F-Detroit Truetrac, R-Detroit Locker, 4:10 gears, LT315/70r17 Duratracs, Amsoil Gear lube, Amsoil FE ATF, Delo 400 LE 5w30 diesel, Delo ELC, archoil 9100/ar6200, bpd ficm, arp studs, oem gaskets, HD water pump, stc, plugs, stand pipes, 6.4 banjo bolts, monitor, new oil cooler, coolant filter
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post #5 of 20 Old 04-10-2009, 06:44 AM
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Originally Posted by kdskidoo View Post
I was wondering what MPG's everyone else who has a lifted 6.0 is getting. I just checked mine for the first time since getting the lift and the 38.5 tires and was surprised to find I'm getting 14.5 mpg city, hand calculated. considering I was only getting around 16 before the lift I didn't think 14.5 was too bad. this is the truck -- '07 6.0 250 SD excab, auto w/ 10,000 miles, no performance upgrades except 4' turbo back with the cat reinstalled but no muffler. I am running 55 psi in tires. how I calculated -- since the speedo is off with the big tires I had to do a bit more calculating than normal. when the speedo shows I'm doing 60 I am actually doing about 66, wich is 10% more. when I pulled up to fill up my trip read 167 miles so I added 10% which gave me about 184 actual miles. divided by 12.5 gallons = about 14.5 mpg. how much do you guys feel I could improve upon this by getting a programmer and an intake or any other performance upgrades?
the only way you can truly hand calculate is to fill it up as far as possible and take a trip that you know the exact mileage to, say it is 200 miles to this point. then fill up as full a you were before hand, and then do your calculations. using the lie-o-meter to hand calculate is probably not giving you an accurate reading.

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post #6 of 20 Old 04-10-2009, 07:57 AM Thread Starter
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Originally Posted by Baddestt View Post
dude thats a badd azz truck you got. but you may want to invest in some lower gears to keep that daily strain off the tranny. It is critical for longevity. With 38s I would suggest some 4.56gears this would also help you increase your MPG
hey thanks. yeah, I agree on the gearing. do you think 4.56's would be the best gears for the 38.5 tires

2007 F 250 superduty Highline Pkg.
10" lift-Rock Krawler coil over 4 link pre-runner system w/ Fox res. shocks all around
dual BDS steering stabs
custom trac bars w/polished stainless inlay w/"FORD" lazer cut in center and flames on ends
Raptor coating on frame axles, etc.
bushwacker pocket style fender flares
Jesse James Lawless 18 X 10 chrome wheels
38.5 X 14.5 Pro Comp Xtreme mud tires
AMI Billet door handles and fuel door
4" turbo back stainless exhaust w/ 5" tips
much more to come
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post #7 of 20 Old 04-10-2009, 05:10 PM
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I am getting 14.5 (according to the onboard computer) with a 4" BDS lift and 325/60/20 tires.

2006 F-250 King Ranch CrewCab Short Bed 6.0PSD 4x4, 4" BDS Lift, 20" KMC XD Chrome Rockstars wrapped in Toyo Open Country MTs SOLD
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post #8 of 20 Old 04-10-2009, 05:59 PM
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I just did this today.... I just installed a propane injection I had laying around and got 22 MPG on the highway and 18.4 in the city. Thats with almost a whole tank ran through it. The lie-o-meter said I was only getting 18.6 MPG.

'07 F250 CC SB
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post #9 of 20 Old 04-10-2009, 07:17 PM
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i'm getting about 14 1/2 and that's driven extremely conservative . that's hand calculating & using my gps to calcualt the miles .

2006 king ranch,8" fabtech lift,37" procomp e/t,magnum force cold air intake,6"bull hauler stacks,sct innovative custom tunes,zoodad mod,
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post #10 of 20 Old 04-13-2009, 03:53 PM Thread Starter
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Originally Posted by DYNAMiTE View Post
I just did this today.... I just installed a propane injection I had laying around and got 22 MPG on the highway and 18.4 in the city. Thats with almost a whole tank ran through it. The lie-o-meter said I was only getting 18.6 MPG.
pardon my ignorance, but what is a propane injection?

2007 F 250 superduty Highline Pkg.
10" lift-Rock Krawler coil over 4 link pre-runner system w/ Fox res. shocks all around
dual BDS steering stabs
custom trac bars w/polished stainless inlay w/"FORD" lazer cut in center and flames on ends
Raptor coating on frame axles, etc.
bushwacker pocket style fender flares
Jesse James Lawless 18 X 10 chrome wheels
38.5 X 14.5 Pro Comp Xtreme mud tires
AMI Billet door handles and fuel door
4" turbo back stainless exhaust w/ 5" tips
much more to come
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