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Bigdiesel74 10-19-2009 06:40 PM

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

Matt 10-19-2009 06:45 PM

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. ;) :p

Scottina06 10-19-2009 07:02 PM

Re: 4.7L gas mileage...
mine seemed to get around there too in town...stop and go driving

Matt 10-19-2009 07:09 PM

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).

Scottina06 10-19-2009 07:17 PM

Re: 4.7L gas mileage...
best i ever got with my 4.7 was on a trip to SC....20-21

AcidCold 10-19-2009 09:16 PM

Re: 4.7L gas mileage...
I get around 13.5 city and 19 highway with a light foot.

FlyinRyan 10-19-2009 11:32 PM

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.

sousa 10-19-2009 11:58 PM

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....

robpp 10-19-2009 11:58 PM

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......

mzh29 10-20-2009 03:20 PM

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:D)

baronvonhavok 10-20-2009 05:11 PM

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.

05wkguy 10-20-2009 08:43 PM

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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