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Matt Barret
Dodge Dakota
11/27/2001
10:57:29
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 Subject: 4.7L Gas mileage observation
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I went back through 3 months of gas receipts last night. (Sept thru Nov.) My average mpg was 15.3 mpg, with the highest being 16, and the lowest being 14.7 mpg. This covered approx 3800 miles, mostly around town, mixed driving, with alot of wide open throttle! No extended interstate driving in this time frame.
My highway mileage is usually in the 17.5 to 18.5 mpg range, thats running 75 mph @ 2750 rpm +/-
After all the modifications, PCM, 72mm TB, Exhaust, Air Intake, IAT adjuster, Plugs, and 180 T-stat my "around town" mileage has'nt changed. My highway mileage has dropped approx. 1-2 mpg.
This was using strictly 93 octane (mostly Citgo).
I'm pretty satisfied with 15 mpg, considering the weight of the truck, gearing, areodynamics, and my driving style. I can't complain.
Matt Y2K-HEMI
'00 RC 4.7L 5spd 3.92 LSD
14.23 @ 94.49
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snowman
Dodge Dakota
11/27/2001
11:54:58
| RE: 4.7L Gas mileage observation
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Hey! i COULDNT COMPLAIN EITHER AT WIDE OPEN THROTTLE! What do you kick out at the rear wheels now?
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Matt Barret
Dodge Dakota
11/27/2001
12:23:59
| RE: 4.7L Gas mileage observation
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@ the Rear wheels, prior to the 72mm TB, 220hp/295tq +/-, my estimate after the TB (no new dyno runs as of yet) probably 225hp/305tq +/-, just a guess.
Matt Y2K-HEMI
'00 RC 4.7L 5spd 3.92 LSD
14.23 @ 94.49
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Brian024.7
Dodge Dakota
11/27/2001
14:36:40
| RE: 4.7L Gas mileage observation
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Message:
thats pretty good, my guess is the PCM produced the drop in milage...you'd have really good gas milage (for a v-8 truck) without it.
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CW
GenIII
11/27/2001
14:41:23
|  RE: 4.7L Gas mileage observation
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Message:
Matt
I know I have asked this question in another thread but how do you like the 72mm TB?
2001 4.7 5sp RC 3.92 LSD sport plus
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Matt Barret
Dodge Dakota
11/27/2001
15:17:12
| RE: 4.7L Gas mileage observation
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CW, I LOVE IT ! The look, the sound, the Torque increase, its just an awesome bolt on. If they had been available a year or two ago, I'd probably had gotten one before some of my other modifications. By far, the most increase in Tq, and power has come from the Flowmetrics TB, even more than the Mike Leach PCM.
It did seem to cause a slight loss on the low end, according to the trusty "butt dyno", but with the 5spd trans you can overcome that with a higher rpm launch. I'm trying to shedule some dyno time. the local speedshop was down during SEMA, and now my workload has prevented me from getting in there, but I'm trying to work something out soon.
The best part about Flowmetrics is that Bruce does'nt just sell a product that looks pretty (which is does look awesome), but they design these TB's to be reliable, and to make power.
He did'nt rush the design, and R&D process just to get the TB out to everyone. This is a top quality peice, unmatched by anything out there.
Matt Y2K-HEMI
'00 RC 4.7L 5spd 3.92 LSD
14.23 @ 94.49
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Andrew
Dodge Dakota
12/04/2001
09:31:17
| RE: 4.7L Gas mileage observation
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Message:
i bought a 20000 dakota with the 4.7 v8 and the best mileage i've seen out of it is close to 13.5. i think there could be something wrong, when i run it wide open alot i get about 11, WHATS WRONG!?
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dk
Dodge Dakota
12/04/2001
10:59:55
| RE: 4.7L Gas mileage observation
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Message:
I've had my 02' QC 4.7 4x4 for about three/four weeks now, and have put about four tanks of gas in it. I haven't gotten anything over 12.6 on mine so far. I've got 1400kms on it, I think that's about 1000 miles. Had it in 4x4 for a tank and it dropped to 11.0 mpg
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CThomp
Dodge Dakota
12/04/2001
11:29:28
| RE: 4.7L Gas mileage observation
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Message:
Where the heck do you guys drive these trucks. I have a 4x2 4.7 3.92 CC and I haven't gotten anything under 14. My best was almost 20. I usually average around 17. South Florida is pretty flat though.
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Knobbyman
GenIII
12/04/2001
11:36:36
| RE: 4.7L Gas mileage observation
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CThomp.. you have a 4x2 CC.. your compairing it to 4x4 QC's the weight difference alone can cause the lower milage not to mention the gearing in the front even when it's not engaged.
'01 Graphite QC 4x4
4.7 3.55 LSD
http://www.knobbyman.com
----Speed only breaks stuff faster----
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CThomp
Dodge Dakota
12/04/2001
12:03:32
| RE: 4.7L Gas mileage observation
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Message:
I realize the weight difference but I often here many people with my setup getting far worse than I do. Just wondering what kind of terrain people are driving on (hills, mud, etc.)
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dk
Dodge Dakota
12/04/2001
13:37:33
| RE: 4.7L Gas mileage observation
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I'm in Calgary (Canada). It's been pretty cold out recently -20. So, maybe it's the weather? It's new? I just put the K&N filter in, do I need to reset my PCM? It had about 500kms on it when I installed it.
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Dr Q
DakotaEnthusiast
12/04/2001
16:34:23
| RE: 4.7L Gas mileage observation
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Drove about 2000mi on vacation and did a little experiment 17mpg@74mph 20mpg@69mph, your milage may vary.
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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RJay
Dodge Dakota
12/04/2001
18:24:41
| RE: 4.7L Gas mileage observation
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Message:
I've put 2 tanks through my 2002 QC 4x4 4.7 auto.
First tank was 50% highway 50% city = 16mpg
Second Tank 35% highway 65% city = 14mpg
I am at 9000ft abovce sea level in the mountain of colorado.
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hardbody
Dodge Dakota
12/04/2001
20:09:42
| RE: 4.7L Gas mileage observation
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I'm averaging 15-16 MPG, I drive 72 miles a day just to work and back all on turnpike averaging 75-90 mph the whole way so I really can't complain. 01 cc 4x4, 4.7, autom trans, 3.55's
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dk
Dodge Dakota
12/04/2001
21:52:20
| RE: 4.7L Gas mileage observation
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RJay,
I'm up in Calgary, so I would be about the same altitude as you. But the thing is, I can't get over 13mpg. I think I'll wait a few more tanks before I take it in.
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Ken
Dodge Dakota
1/08/2002
00:24:07
| RE: 4.7L Gas mileage observation
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Message:
Hey guys (first post), I'm surprised at the 4.7L mileage. I own a '96 5.2L 5-speed and easily average 18-19 mpg. All in-town and in mountainous East TN. I've been looking hard at the gen3's, luckily for my wallet, dealers never have 4.7L 5spds on the lot. I've been reading the forums for about 2 weeks and get the impression that the 4.7L's are much more efficient engines than the 5.2L, so I'm kinda surprised at the low mileages.
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Ed
Dodge Dakota
JOIN HERE
1/08/2002
02:04:55
| RE: 4.7L Gas mileage observation
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Message:
I can't complain about the mileage my truck gets. Depending on my driving...city or highway I get any where from 17 to 21 mpg. That includes pulling a car trailer some times.
I have a 2001 Dakota sport ext cab. It is a 4.7 liter, 5-speed, sure grip axle with 3.92 gears. I got it last april and been enjoying it ever since. I had to order it special though it seems this combo is hard to find on dealers lots.
I had a 2000 Dakota sport ext cab before this one. It had a V6 and I never got mileage as good as I do now with this one. Just my two cents.
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