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Thread: MPG updates

  1. #21
    Lifetime Member Getting Dirty 06JeepXKHEMI's Avatar
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    Not literally a minute, everything was set back to 0, mpg, time running, etc.. Ill go to it for longer but everything seems to be cleared
    2K6 Limited Jeep Green Metallic/Saddle Brown Leather XK HEMI QDII Old Man Emu HD Suspension w/ Fox Emulsion 2.0 Rear Shocks 1.5" SpiderTraxx Wheel Spacers 265/70 GoodYear MTRs w/Kevlar True Dual Exhuast w/IMCO 50 K&N 63 CAI Diablo 91/Performance Transmission Tuned SA Belly Skid MOPAR Gas Tank Skid, Transfer Case Skid, Suspension Skid Front Tow Hooks 6k HID Lows/3k Fogs

  2. #22
    Lifetime Member Getting Dirty Matt's Avatar
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    Lol got it

  3. #23
    Lifetime Member Getting Dirty Core XK's Avatar
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    I have been running 87 since I've had my XK so maybe I will try 89 next fill up? The only mods I've done to the engine so far is put the K&N drop in air filter which I feel improved but then the tires and lift went o,n and I am down to an average of 12-12.3 city driving mostly.
    2010 Silver HEMI XK QTII

    My Garage: http://www.theultimatejeep.com/showt...re-XK-s-Garage

  4. #24
    Lifetime Member Getting Dirty 06JeepXKHEMI's Avatar
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    Thought Id give an update, after switching to Sunoco 89 for 87 mpgs went up and are now at 11 from 9.8-10.. Still a huge drop from before this issue came about, 12.2, but I didnt buy her for gas mileage!!! And yes you should switch to 89 as per factory recommendations..
    2K6 Limited Jeep Green Metallic/Saddle Brown Leather XK HEMI QDII Old Man Emu HD Suspension w/ Fox Emulsion 2.0 Rear Shocks 1.5" SpiderTraxx Wheel Spacers 265/70 GoodYear MTRs w/Kevlar True Dual Exhuast w/IMCO 50 K&N 63 CAI Diablo 91/Performance Transmission Tuned SA Belly Skid MOPAR Gas Tank Skid, Transfer Case Skid, Suspension Skid Front Tow Hooks 6k HID Lows/3k Fogs

  5. #25
    Lifetime Member Getting Dirty Core XK's Avatar
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    Quote Originally Posted by 06JeepXKHEMI View Post
    Thought Id give an update, after switching to Sunoco 89 for 87 mpgs went up and are now at 11 from 9.8-10.. Still a huge drop from before this issue came about, 12.2, but I didnt buy her for gas mileage!!! And yes you should switch to 89 as per factory recommendations..
    Okay, I think I will do the switch and let it get to E then fill it w/ 89
    2010 Silver HEMI XK QTII

    My Garage: http://www.theultimatejeep.com/showt...re-XK-s-Garage

  6. #26
    Lifetime Member Getting Dirty
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    I know this post was originally targeting HEMI's. But for you V6'ers. I just wanted to update that I haven't reset my mpg in almost 2 months, my combined MPG's is still going up. I'm getting 16.5.

  7. #27
    Lifetime Member Getting Dirty Matt's Avatar
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    Quote Originally Posted by Core XK View Post
    Okay, I think I will do the switch and let it get to E then fill it w/ 89

    Don't forget your odometer & speedometer are going to be off due to the tire size change. Until that's corrected, your "mpg" reading will be lower (you'll be traveling further than the computer thinks due to the increased tire diameter)

  8. #28
    Lifetime Member Getting Dirty Core XK's Avatar
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    Quote Originally Posted by Matt View Post
    Don't forget your odometer & speedometer are going to be off due to the tire size change. Until that's corrected, your "mpg" reading will be lower (you'll be traveling further than the computer thinks due to the increased tire diameter)
    Yeah I forgot about that. The only way to really "correct" this is by a tuner? :/

    I still will change to 89 if its better fuel for the hemi
    2010 Silver HEMI XK QTII

    My Garage: http://www.theultimatejeep.com/showt...re-XK-s-Garage

  9. #29
    Lifetime Member Getting Dirty Matt's Avatar
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    yeah you'll Want a tuner eventually to correct the tire size. Definitely run 89 in that Hemi

  10. #30
    Lifetime Member Getting Dirty Core XK's Avatar
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    Sucks I just filled up with 87 but after this weekend I will need to fill it again lol

    I will be getting a tuner eventually :O
    2010 Silver HEMI XK QTII

    My Garage: http://www.theultimatejeep.com/showt...re-XK-s-Garage

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