Core XK's Garage

[Core XK]

Lmao yes. Kacie and I are both buying something big for ourselves because once the baby comes......

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[Core XK]

Does anyone else put Plus grade fuel faithfully? Or just me...

Also, how often do you guys with K&N filters change or clean the filter? Mine hasnt been touched in over a year 1/2.

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[07JeepXK]

I use 91 or 93 octane every fill

[Core XK]

I use 91 or 93 octane every fill

I thought Plus is whats recommended in the owners manual? Atleast for the 5.7L

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[Matt]

I run 89 per the manual. I tried every combination... 89 and 91 with stock tune, then 87, 89 and 91 with the associated superchips tune; 89 w/stocktune was always the best mpg and no significant performance increases with the higher tunes. Though i'm relatively easy on the gas so didn't really put the WOT tuning to the test.

I usually clean my K&N once a year. Take a peak at it... if it's not dirty then don't worry about it.

[lekmedm]

I've done very well running 87 octane since new.

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[07JeepXK]

I thought Plus is whats recommended in the owners manual? Atleast for the 5.7L

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I run the 91 performance tune with the flashpaq

[06JeepXKHEMI]

I ran my HEMI always with 91 or 93 with the tune at 91 Performance tune. I was avg 17-18mpg highway even with the MT/Rs with I stayed under 72mph and 12-13 city with a heavy foot. My intake I cleaned constantly cause Im ocd about it. You really dont have to but with the wheeling, winter and constant city driving I like to keep it clean. Keep in mind I work from home and have down time where the filter can dry enough before putting the oil on.

[lekmedm]

I ran my HEMI always with 91 or 93 with the tune at 91 Performance tune. I was avg 17-18mpg highway even with the MT/Rs with I stayed under 72mph and 12-13 city with a heavy foot.

I get those numbers running 87 with my 4"SL and 285s and no engine tune.

[06JeepXKHEMI]

My HEMI ran like **** with anything less than 91 in it, even with the right tune and my mpgs were terrible. I also drove aggressive cause who doesnt like the sound of a HEMI at WOT with true duals!