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  1. JK Tech Forum
    Hi all. I drive an '09 Wrangler JK Unlimited (3.8). In the last week I've experienced a huge reduction in power. It takes a huge effort to reach 60mph with the pedal all the way down on a flat highway, and a massive increase in my fuel consumption which has gone from an average of 16 L/100km...
  2. General Jeep Discussion
    Despite our growing appetite for trucks and SUVs, the EPA reported yesterday that the average MPG in the US increased by 0.2 MPG to all-time highs, and looks like we gained another 0.5 MPG in 2018. I think it is no surprise that FCA is dead last. Please refrain from turning this into a...
  3. JK General Discussion Forum
    So my wheels and tires are finally in, lift is coming next week!!! so here is the question that 1000000 people have asked on here, what gears should i go to, SHOULD i regear or wait for a bit if i am not planning on crawling, just some woods riding and maybe a little mud, and what will my MPG...
  4. JK General Discussion Forum
    I currently have a 2014 Wrangler 2 door JK with the following mods: 2.5" Lift Needs to Be identified 35x12.5x17" Nitto Terra Grapplers 17" KMC XD300 Pulleys FabFours FMJ Front Bumper and Guard I understand that with those modifications my mileage should suffer a bit, however im struggling to...
  5. JK Tech Forum
    Sorry if there is already a thread on this, I tried searching and wasn't able to find anything. My wife and I each have Wrangler unlimiteds. She has a 2014 Sahara with 30K miles and I have a 2016 Sport with 2,500 miles. Both have the Pentastar, both have 3.73 gear ratios, both have the same...
  6. JK General Discussion Forum
    I recently purchased a 2012 Jeep Wrangler Unlimited Altitude Edition and was wondering about my average MPG. I am new to the Jeep family and was aware of the whole fuel economy of the Wrangler but my Jeep is averaging 12-13 mpg (stock). I live in Chicago where tons of lights, stop signs, and...
  7. JK General Discussion Forum
    Hey guys, gear thread bare with me. I want specifics on 2012+ JKs and JKUs with a 6-speed and 3.73 gears, please tell me your experience. I feel the auto and 3.73s have the loudest voice I want hear from you stick drivers how the deeper gears behave for day to day use. I am ordering my first...
  8. JK General Discussion Forum
    I Recently bought a 2008 Jeep JKU sahara and im already loving it. However there are a few things I wish to change. I average about 20-30 miles a day, most of which are on the HIGHWAY. I recently started thinking about purchasing an aftermarket Air Intake system to help increase MPG and throttle...
  9. JK General Discussion Forum
    10 Years ago I owned a Jeep Cherokee 2.8CRD and fitted a tuning chip which improved mpg from 17 to 22 for short journey town driving. I can not remember the name of the chip and was wondering if there was a good chip that everyone uses now days? Thanks David.
  10. JK General Discussion Forum
    Hello all, daily drive my 08 Wrangler with 33" tires and 2.5" inch lift and was averaging ~12.5 MPG on a good day. The transmission hunted and struggled to get in a proper gear so I bought a tuner, specifically the Superchips Flashpaq for my Jeep. Adjusted the ECU for the bigger tires and made...
  11. JK General Discussion Forum
    Ok guys i am new to the jeep world and what i have is a 2015 2 door sport 6 spd with 3.73 and a soft top this jeep is my daily so im wanting advice on lift and tire combos that i wont need to regear for and that want kill my mpg to bad im on the ropes between the 285/75r17 and the 315/75r17 with...
  12. JK General Discussion Forum
    Hello everyone, so I've had my auto 08 jku for a while now and have always been getting horrible MPG, even for a jeep. Its completely stock besides having an AEM cold air intake. Currently im getting an average of 10.8 city and up to 20 on the highway, which I do not drive very often. Even...
  13. TJ General Discussion Forum
    So I know when I got my Jeep i was going to have bad mileage but after calculating it twice now, its far worse than expected. When I drove conservatively, I got 11mpg. When I drove without caring, I got 10. When I got 11 I never went over 2000rpm. I don't live in the city, but eve if i did i'd...
  14. JK Tech Forum
    I'm a new Jeep owner and I am trying to find ways to improve my MPG. I have a 2010 Wrangler Sahara Unlimited 4x4 with 35 inch tires and a lift kit. I'm currently getting about 12.5 to 13.5 mpg. Any suggestions?
  15. JK General Discussion Forum
    Before buying our 2013 JK Sport this past September, we did a lot of research. Because of where we live we needed true 4WD capability, and we didn't want another pickup. For a long time we didn't consider a Wrangler because of things we read and heard. You've heard it all before...
  16. JK General Discussion Forum
    I see lots of posts of people putting in new gears to compensate for the tire size increase. I haven't been able to find posts about people upping the gear ratios on stock tires and no lift. Seems like doing this should have quite an effect on the stock tire size.. Anyone able to comment? And I...
  17. JK General Discussion Forum
    I just had my 07' Rubi JK lifted/larger tires. (Daystar 3" lift and Nitto 35" Mud Grapplers) I got the look I wanted but am little surprised at how much MPG I lost. I am only getting around 11MPG around town. I only have a few miles to work/gym/sitters so its not too big of a deal but I...
  18. TJ Tech Forum
    I have a 2001 jeep tj, 2.5L, 1"BL, 2"bb, on 33x10.50x15s. i need to know if regearing to 4.56 or 4.88 will help or worsen my MPG. i know it will give me power gains but what about mpg. i rarely drive it on the freeway and if i do its only for short distances. i live in a city with a lot of hills...
  19. JK Tech Forum
    Hey guys, I am a newb around here. Just bought my first Jeep a couple of months ago. It is a 2012 Sahara, 4D, lifted (I think 2.5") with 35" Mud Grapplers and auto transmission. I drive ALL pavement. The other day, I was playing around with the instrument panel and saw that it auto...
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