Plugs, Cold air intake, and a Cat back exhaust system would probably be the
easiest and cheapest. They should give you better mileage, but you may also
experience a loss, do to the overwhelming need to put your foot into it.
This is my problem currently, other then that, on highway trips I have seen
as high as an average of 20-21. And I have a 2000 4x4 4..7 auto with 3.55
gears..
Josh
"ZeRTified" <zrt800@iname.com> wrote in message
news:k8uvat835g0ma7dtagradbtbj6g4grka6f@4ax.com...
> Hey Guys,
>
> Just found this NG and have found lots of useful info.
>
> I have a request from all the 2000 4.7l 4x4's out there. I'm seeing
> very poor gas mileage. ~13mpg (city(-) and highway(+)) and was
> wondering what can be done to improve on that. I've already installed
> a K&N filter but it's too soon to tell how things are shaping up as
> far as gas consumption goes.
>
> The US EPA states this vehicle should get 13 city and 19 highway for
> an average of 16mpg @ 45/55(?) but on the last trip to the cottage,
> the best I got was 13+, all highway @ 65mph.
>
> In any case, I'm relatively mechanically inclined but don't want to
> spend a fortune, tear down my block and add XXXhp. What I'd like is
> some quick and easy mods that can up my MPGs without sacrificing
> lifespan or reliability.
>
> The things I've been reading about is a plug change and t-stat change.
> Will these simple things add to my fuel economy or are they
> performance mods that'll boost the get-up-and-go, but suck more gas
> out of my wallet?
>
> For the record I'm in Toronto, Ontario and the 13mpg was in U.S.
> gallons. Miles (Kms/~1.6) on the odo / gallons (litres x 3.78)
> pumped. Not overhead computer. (Don't have one)
>
> Any help would be much appreciated.
>
> Thanks in advance.
>
> Rich
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