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  #1  
Old 10-19-2009, 06:40 PM
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4.7L gas mileage...

I'm getting around 13 mpg with my 4.7. i was wondering if this is normal for this engine and what i can do to get more mpgs
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Old 10-19-2009, 06:45 PM
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Re: 4.7L gas mileage...

Over the past year on Jeep forums, it seems all engines (WK's) get around 13-16 mpg. Of course, this is purely independent due to the right foot theory.
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Old 10-19-2009, 07:02 PM
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Re: 4.7L gas mileage...

mine seemed to get around there too in town...stop and go driving
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Old 10-19-2009, 07:09 PM
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Re: 4.7L gas mileage...

Yeah, I'm right at 15mpg. I tested the EVIC against real world application and the EVIC was off by about .3mpg (in the bad direction, lol).
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Old 10-19-2009, 07:17 PM
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Re: 4.7L gas mileage...

best i ever got with my 4.7 was on a trip to SC....20-21
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  #6  
Old 10-19-2009, 09:16 PM
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Re: 4.7L gas mileage...

I get around 13.5 city and 19 highway with a light foot.
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Old 10-19-2009, 11:32 PM
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Re: 4.7L gas mileage...

For what its worth, the testing we've done with the ported 4.7 TBs I've done, all of the customers have indicated about a 1 MPG increase. Of course this requires driving appropriately, but the gains for whatever reason are there.
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Old 10-19-2009, 11:58 PM
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Re: 4.7L gas mileage...

I get about the same MPG according to the EVIC. The best I ever got was 19MPG on a long trip. I drive like an ass though....
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Old 10-19-2009, 11:58 PM
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Re: 4.7L gas mileage...

i just returned from a 1600 mile road trip and I got over 20 in my 4.7 cruising 10 over wherever we went.

i saw a noticable increase when i loaded the superchips. but that trip was on a stock tune plus you can see my mods......
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Old 10-20-2009, 03:20 PM
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Re: 4.7L gas mileage...

I get right around 14 mpg, but i have the 93 superchips tune, cai, and a very heavy right foot. I mean i can barely lift it.

I did get 47mpg once according to the evic (reset the mpg calculator rolling down a really steep hill at 50 mph and foot off the gas)
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  #11  
Old 10-20-2009, 05:11 PM
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Re: 4.7L gas mileage...

in the city i get about 13-15 depending on how i drive and on the highway i usually get 20-21. this is with a K&N FIPK too.
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  #12  
Old 10-20-2009, 08:43 PM
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Re: 4.7L gas mileage...

I average 13-15 in town and about 22-23 on the highway (at 65mph). BUT, a cold-air-induction (CAI) should help a little and a better exhaust if you don't mind a bit more noise.
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