View Poll Results: Whats your MPG? Vote One Street One Highway
Highway 9-
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Multiple Choice Poll. Voters: 132. You may not vote on this poll
Your MPG and The Mods That Got You There
JK Jedi
Joined: Apr 2008
Posts: 5,168
Likes: 1
From: texarkana,tx
I would like to know what RPM the high mpg guys are going on the highway.
I have 3" tera, 35" mud graps, 5.13s
jeep is 2 door automatic.
I get 12-13mpg mixed
I have 3" tera, 35" mud graps, 5.13s
jeep is 2 door automatic.
I get 12-13mpg mixed
Last edited by bigbluejk; Jun 25, 2009 at 10:52 AM.
JK Enthusiast
Joined: Aug 2007
Posts: 378
Likes: 1
From: Ft. Irwin, CA (But Willamsburg VA is home)
Mileage - Mixed 17MPG average. Highway only - 20MPG.
Mods:
Airaid CAI (no, it didn't make the mileage better.....just helped the top-end acceleration and made the exhaust sound better)
OME 2" HD lift and trackbars from Northridge w/ Currie endlinks
Spidertrax 1.5" wheel spacers
Warn 8000 winch
LittleSeats rear facing bench seat
The key to me getting 20+ on the highway.....cruise control. With me being the master of acceleration, I get 18-19MPG highway. Let the PCM take over and I average 20.5.
BTW, I have a built Camaro to beat on for my speed fix, so I usually drive the Jeep like an old woman. Revs rarely get over 4KRPM and I usually stroll along at 70MPH on the highway. It's also a 6-speed manual.
Mods:
Airaid CAI (no, it didn't make the mileage better.....just helped the top-end acceleration and made the exhaust sound better)
OME 2" HD lift and trackbars from Northridge w/ Currie endlinks
Spidertrax 1.5" wheel spacers
Warn 8000 winch
LittleSeats rear facing bench seat
The key to me getting 20+ on the highway.....cruise control. With me being the master of acceleration, I get 18-19MPG highway. Let the PCM take over and I average 20.5.
BTW, I have a built Camaro to beat on for my speed fix, so I usually drive the Jeep like an old woman. Revs rarely get over 4KRPM and I usually stroll along at 70MPH on the highway. It's also a 6-speed manual.
JK Super Freak
Joined: Oct 2007
Posts: 1,595
Likes: 0
From: The Badlands (near Lafayette, IN)
My mods have done nothing but sap my MPG.
Before lift, rock sliders, tires, and bumper stub, I was getting 22+ consistently on the highway, provided I stayed under 65 MPH.
I'm usually at 19 or 20 now.
I installed E3 plugs to see if I could recover some MPG and gain the power others have claimed.
A slight bump in city MPG, but I haven't seen much effect on highway MPG or perceived power.
Time will tell on highway MPG, though. It's been hot, so the highway travel has been either top off or AC full blast.
Before lift, rock sliders, tires, and bumper stub, I was getting 22+ consistently on the highway, provided I stayed under 65 MPH.
I'm usually at 19 or 20 now.
I installed E3 plugs to see if I could recover some MPG and gain the power others have claimed.
A slight bump in city MPG, but I haven't seen much effect on highway MPG or perceived power.
Time will tell on highway MPG, though. It's been hot, so the highway travel has been either top off or AC full blast.
JK Enthusiast
Joined: Mar 2007
Posts: 253
Likes: 0
From: The "ROK" (originally from SoCal)
I average high 18's, low 19's mixed between highway and around town...after installing the 35's the mpg sucked...until i 'hyperteched'. got to give that baby a 
Mod list is below
Mod list is below
JK Jedi
Joined: Oct 2007
Posts: 5,537
Likes: 0
From: Colorado
Before M/Ts: 19.0-20.5 mpg in 80/20 highway/around town driving.
With 32" M/Ts: 17.4-18.4 mpg (same conditions).
THis is optimized with top on and summer fuel, I lose 1-1.5 mpgs if either of these variables change.
Only mod is the Airaid intake, while I gained some throttle response, it had no measurable effect on fuel economy.
With 32" M/Ts: 17.4-18.4 mpg (same conditions).
THis is optimized with top on and summer fuel, I lose 1-1.5 mpgs if either of these variables change.
Only mod is the Airaid intake, while I gained some throttle response, it had no measurable effect on fuel economy.
JK Enthusiast
Joined: May 2008
Posts: 323
Likes: 0
From: Tampa, FL
Wonder if we should be putting whether or not we reprogrammed our jeeps after they were lifted / modded cause the wrong size tires can really throw this number off. I reprogrammed mine with the AEV.
I am averaging between 14.5 & 15.5 with 35x12.5x18 tires and 5:13 gears. I also have a flowmaster 40 exhaust.
I am averaging between 14.5 & 15.5 with 35x12.5x18 tires and 5:13 gears. I also have a flowmaster 40 exhaust.
JK Enthusiast
Joined: Jun 2009
Posts: 377
Likes: 0
From: Nowhere
Mileage before SC, Street 16-18, Hwy. 20.5 - 21.8. 3.73 gears, stock Auto with the exception of the newly added SC. I try to keep it at 65 on hwy. but usually end up at 70.
Mileage after, still waiting to run a couple tanks through it after the programming.
Mileage after, still waiting to run a couple tanks through it after the programming.
JK Freak
Joined: Oct 2008
Posts: 896
Likes: 0
From: Colorado Springs, CO
I have gotten 20+ MPG numerous times on the HWY. Now, it was far easier with the stock donut tires (225/75R16). But I have done it with my S/T's as well.
The key is watching your speed. If you go over 65, you can kiss your mileage goodbye. These are not arrow dynamic vehicles, and require quite a bit more power to progress as air resistance increases. If I am in the flats, going 55, I can get 22mpg all day. I have almost gotten 23mpg going 55. Going 65, the best I have gotten is 20.2 which I still consider quite good. Drafting a bigrig can be a huge help as well. You can be about 3 car lengths behind them and still have much less wind resistance (you can tell as the wind noise dies down).
The key is watching your speed. If you go over 65, you can kiss your mileage goodbye. These are not arrow dynamic vehicles, and require quite a bit more power to progress as air resistance increases. If I am in the flats, going 55, I can get 22mpg all day. I have almost gotten 23mpg going 55. Going 65, the best I have gotten is 20.2 which I still consider quite good. Drafting a bigrig can be a huge help as well. You can be about 3 car lengths behind them and still have much less wind resistance (you can tell as the wind noise dies down).
