Cherokee 4.0 Milage
#16
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Model: Cherokee
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I made the air intake hole about twice the stock size. I also removed a plugged hole in the radiator firewall just in front of the air intake hole. My thinking was that after opening the hole in the radiator firewall there would be a more direct airflow of cooler outside air. Not sure if this will cause a problem later but for now it seems good. If anyone has any input on this it would be great.
#18
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Year: 1995
Model: Cherokee
Engine: 4.0
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I don't see why they plugged that firewall hole in the first place, it was open on my F150 obviously to let in more/cooler air.
I'm also thinking about wrapping my air box in insulation to try an deflect some heat, don't know if that would do anything, also, I would think that hood vents would give a hp or 2, that would be about 40-60 degree cooler air the intake would suck in.
I'm also thinking about wrapping my air box in insulation to try an deflect some heat, don't know if that would do anything, also, I would think that hood vents would give a hp or 2, that would be about 40-60 degree cooler air the intake would suck in.
![](http://www.go.jeep-xj.info/Airtube003.jpg)
#19
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Year: 1992 2dr Sport 2wd & 1992 4dr Laredo 4x4
Model: Cherokee
Engine: 4.0 liter H.O.
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I took out the restrictor plate/baffle thing & will do another mileage check soon
#21
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Year: 1997
Model: Grand Cherokee
Engine: Straight 6
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PICS...
With K&N you are paying for the name.
I have been wondering how to rig the stock box to work with the new cold air intake.
Last edited by 97Straight6; 08-27-2009 at 09:33 AM.
#22
#24
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Year: 1999
Model: Cherokee
Engine: 4.0
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with 215 75 15 tires and stock gears at 60-65 I get 25mpg on the highway I cant complain my ZJ only gets 21 with 31's and a 4.0
#26
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Year: 1999
Model: Cherokee
Engine: Golen 4.6 Stroker, AFE Headers, 62mm TB, 24 LB Injectors, Brown Dog kit, HF Cat, 3" Exhaust
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Lol is it Halloween or something? The dead are walking the Earth...
My lifted 6.5" lifted, Stroker XJ gets about 15-16mpg highway. Up to 20 if I go easy on the pedal.
My stock XJ gets 25 pretty consistently on the highway. Sometimes a little more, sometimes a little less.
My lifted 6.5" lifted, Stroker XJ gets about 15-16mpg highway. Up to 20 if I go easy on the pedal.
My stock XJ gets 25 pretty consistently on the highway. Sometimes a little more, sometimes a little less.
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