99 XLT, Regular Cab 4X4, 4.2V6, 5 speed, 17 inch wheels and tires with Sport Package and 3.55 axle. Only 500 miles on it and so far averaging 14.5mpg on 2 tanks of 89 octane. Put a K&N filter on it today and will be putting a Dynomax Race Magnum muffler on soon. Hopefully, it will get better. Driving is 50/50 city highway.

 

We've had some discussions lately about the variances in gas mileage that F150online participants have been reporting. As we all know, there are many factors that affect gas mileage, so I thought it would be nice if we could have a thread where we can have people post their mileage results, and we could accumulate this kind of data so owners of these vehicles will have a better idea of they are getting the kind of results they should be getting for their exact vehicle configuration, location, and type of fuel, etc.

What would be a great help would be if anyone who posts their mileage would be so kind as to tell us the configuration of their vehicle. Is it a 4X2, or a 4X4? Is it a 4.2V-6, a 4.6 or a 5.4 V-8? Super Cab? Long bed? And if you've had it weighed, say, at the drag strip or at a scrap metal recycler, even better if we can get that data too!

Also, what state was your vehicle *originally* sold in, so we'll know what emissions package it has from the factory, as we are trying to determine if California-spec vehicles are still getting worse gas milege, like they always used to in the 70's and the 80's?

And last, what brand and octane of gasoline are you using?

Thanks in advance to everyone for any data you may care to share with your fellow F150online participants!

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com

 

4.2L V6 Auto Regular Cab SWB 4x2
Southeastern Michigan
93 Octane Fuel (still pings!)
15 mpg City/Highway (Superchipped Equipped)
Best 1/4-Mile: 16.26 sec @ 84.43 mph
Chirps the tires on the 1-2 shift! :-)




[This message has been edited by HotV6 (edited 10-13-1999).]

 

I get 14-15 around town and about 17 on the highway. I have gotten as high as 19 on the highway. The milage will vary according to my heavy foot. Total average is 15.6 after 7k miles.

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99 F150 Lariat SC, 5.4, 3.55 LS, Superchipped, K&N filter, Full Window tint, Deep Wedgewood Blue/Gold, Itialian Burl Dash Kit, Factory Steps/Towing Package, Rear Slider, Hard Tonneau by The Edge

 

Mike,
We have had this discussion before, if you are concerned about getting great milage, don't buy a truck! Although I must admit I do keep an eye on mine just to see how driving habits effect milage. Recently on a road trip from Vegas to Big Bear, Ca I drove very concervatively and had my best milage ever at 17.2 mpg. On the flip side, I also went from Vegas to Zion Nat'l Park, UT, and drove at 85+ the whole way and got 11.8 mpg. Around town I tend to get between 12-14 mph depending on how many chevy's I run into that week! Any other's out there with a 4.9? Would like to hear what your results are!

Neal Coppola
Lv, Nv

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'94 F-150, 4.9 6cyl., K&N FIPK, Mangecor 8mm wires. Gibson 3" Side Swept, MSD Blaster Coil. Recently Superchipped! Stereo under construction, 2-10" Rockford Fosgate, 600 Watt Amp. Pioneer head unit, will sound great if it ever gets done! Est. 200 hp 300ft/lb. Torque! Not bad for a straight 6!! New project: '82 Stang, 351 Windsor. I'll keep ya posted.

 

The worst MPG I've measured was 16. That was on the first tank and about 70% city driving. The highest I've ever measured was 21.3 MPG. This was with about 80% highway, 65 to 75 MPH and many hills and traffic. This is with all the mods listed below except for the Superchip. My driving since I put in the Superchip has not been typical (I've been having fun with it) so I can't say what it's done for MPG yet.

Up until Superchip, I'd say I average between 18-20 MPG with my 80% highway driving. I've never had a chance to measure 100% highway mileage. The few times we took a long trip, we got stuck in bad traffic and that killed any good MPG I could have measured.

I remember seeing (somewhere) a weight of 3880 lbs. I have (not by choice) CA emissions and usually use Mobil or 76 gas (87 octane before Superchip, 93 after).

------------------
Danny
'98 F-150 Std., RC, SB, 4x2, 4.2L, 5-sp, 3.08, AC, speed control, rear slider
with Syntec engine oil, MTL trans fluid, Edelbrock IAS shocks, 50 Series Flowmaster, K&N with airbox mod, electric radiator fan, Superchip

 

Dear 94F150,

Yeah, it's funny, most everyone knows not to buy these trucks for their gas mileage, yet gas mileage is still a concern to most owners. That's why I wanted everyone to have this thread so we could all accumulate this data, and more people would have a chance to compare their truck's configuration with similar vehicles, and all the other factors, etc.

Thanks for your post and your data, too! A lot of other 4.9 owners who hang out here will enjoy reading your signature line and all the mods you've done to your 4.9 I-6.

Have fun,

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com

 

Dear Danny,

Those are *excellent* numbers! I see you have 3.08's and a 5-speed, so between your configuration and your mods, it looks like you're getting excellent results!

Thanks for your data,

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com

 

Consider yourselves lucky! My little beast (the stang) get 6-8 mpg thanks to a Edlebrock carb that runs very rich! Unfortunately it only has a 12 gallon tank so I am at Texaco darn near every other day! That's just the price to pay and it's worth every red cent!!

Neal Coppola
LV, NV

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'94 F-150, 4.9 6cyl., K&N FIPK, Mangecor 8mm wires. Gibson 3" Side Swept, MSD Blaster Coil. Recently Superchipped! Stereo under construction, 2-10" Rockford Fosgate, 600 Watt Amp. Pioneer head unit, will sound great if it ever gets done! Est. 200 hp 300ft/lb. Torque! Not bad for a straight 6!! New project: '82 Stang, 351 Windsor. I'll keep ya posted.

 

I have been very **** with my mileage monitoring, so here's what I get:

CA emissions package on a '99 250 LD SC 4x2 w/ 5.4L, auto, 3.73 LS, & LT245/16's

Weight of truck = 5150 (with shell/cap and carpet kit).

Most driving is ~2/3 highway, with the occassional leadfoot (A/C usually on)

I just passed 10,000 miles yesterday, so the engine is hitting it's stride.

14.1 mpg without the shell,
14.3 with the shell,
K&N air filter and airbox mod made no difference in my mileage,
14.1 since going to Mobil 1
12.7 is my worst tank
17.0 is my best tank (ran it @ 80 mph for nearly 5 hrs straight, A/C on whole way)

I've been experiencing a bit of a rough idle problem -- was running Mobil 87, switched to Texaco 89 and it's better, but not gone.

Jim

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'99 F-250 LD 5.4L SC XLT 2WD 3.73LS in White/Silver (w/ EVERYTHING 'cept leather and engine block heater) -- added: SnugTop Hi-Liner & carpet kit, Donnelly electrochromatic/compass mirror, K&N filter, SuperWhite 9007 bulbs, IAS shocks, 3" Induction Airbox Mod, Mobil 1, more to come... (Flowmaster 70 cat-back exhaust is on order, Westin side bars, electric fan, Superchip, and silver fender/wheel flares are next)

http://hometown.aol.com/jimorama/myh...ollection.html

[This message has been edited by JHerron (edited 10-17-1999).]

 

I have a 99 5.4l supercab flareside 4x4. I have been feuling up at Hess with 93 octane and I bought the truck in NY. Since putting in the superchip my gas mileage is @ 12.5-13mpg around town and up to 16mpg on the highway. ( I'm a little hard on the gas around town because I love the power). The only mod so far is the gibson exhaust, a airraid to come soon. Hope this helps...
Gino

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Gino Tedesco, '99 XLT 5.4l, SUPERCHIPPED, 3" Gibson catback exhaust,4x4 S/C Flareside D.wedge bl/Dk.graph, factory sidesteps & Tonneau cover, Manik grlgaurd w/Piaa lights, 305/70-16 Goodyear Wrangler AT/S tires

 

Same here. I have a 1998 F-150 4x4 with 5.4L and 3.55 gears. I get a dismal 12.5 to 13 MPG around town and about 16 MPG on the highway. I recently added a Gibson Swept Side exhaust and Airaid and have not noticed a difference in MPG.

I refuse to buy a "superchip" because I do not want to be stuck buying premium fuel. Instead, I bought a Banks TransCommand to firm up the shifts and eliminate slippage on my E40D transmission which I believe is one of the major advantages of a "superchip." According to a recent Car & Driver review of chips (Hypertech and Superchips), and I quote:

That statement alone says it all. The chips ability to adjust shift points and transmission firmness is the major factor for their gains, IMHO.

--Steve


[This message has been edited by Steve Zinski (edited 10-16-1999).]

[This message has been edited by Steve Zinski (edited 10-16-1999).]

 

I have tracked gas mileage from day one. In 1997 average was 18.386. In 1998 average was 17.597. In 1999 average has been 18.461. With over 29,000 miles overall average is 17.815 mpg. I drive pretty hard; like I am trying to get my money's worth out of that Superchips Mike sold me; and it works. Somehouw I am almost always out in front at the stop lights. My best road trip averaged 18.71 over almost 2000 miles.

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97 F-150, 2WD, Reg Cab,Flareside,Dk Toreador Red, 4.6, 3.55 LS, EGR Bug Deflector, ******* Bed Cover, Bed Liner, XL Full Length Running Boards, Air Aid Kit, Gibson Single Out Cat Back, Superchips, TransGo Shift Kit, Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs

 

I finally went out to the truck and grabed the paper I write all these figures down on: One thing you you need to know is, my speedometer is off and I don't know the % difference so these are the straight numbers without adjusting for the milage being wrong

w/Texaco 260.4 miles / 16.4 gals = 15.9mpg
w/Exxon 303.1 miles / 22.1 gals = 13.7mpg
w/GoGas 176.5 miles / 11.5 gals = 15.3mpg

I dont know what the real numbers are so I just added "1" to each mpg making Texaco about 17mpg. I ran a minumum of three tanks of each gas except for Exxon. It was so obviously crappy that I only ran two tanks. The GoGas is 92octane and really cheap so that's what I use most of the time. In a town near here, it's going for $.99 for premium!! You can check the sig. for spec on truck.


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97F150 XLT SC 4x4 Flairside 4.6 V8 5sp Dk Toreador Red, 3.55LS
ARE tonneau cover, p255/70rx16 tires (came w/235), Superchip
Pioneer CD w/4 Polk Speakers & Clarion APA5240amp, skid plates
bed liner, side window deflectors, reese hitch, K&N air filter
40s-2chamber Flowmaster, Bosch +4 spark plugs, rustproofing
Better Built Stainless nerf bars

 

I've had my truck for two months, and have gone 6400 miles so far. My normal commute is the beltway around DC, so traffic sucks! I do take frequesnt trips to Georgia, and will be headed that way again this Friday. I check mpg every tankful and am averageing 16.5 mpg. My best tank was 18.3 on my way to Georgia during the last hurricane! Maybe there really is something to the water injection therory! On the return trip, in clear weather, I only averaged 17 mpg! I just installed a K&N filter to the stock air box last weekend, and I'm interested to see if I get better gas mileage this next trip. The last tank of gas (1st since K&N install) was 16.9, but then was noticing a little difference in performance, and was probably a little heavier on the gas than usual. I usually run 87 octane, but the last two tanks have been 89. I normally buy from the lowest priced station, which in my area is the WaWa or Sunoco. I am debating on which option to purchase next, the superchip or the gibson exhaust. Being as my factory exhaust is almost new, I'm leaning toward the chip, but the thought of having to run 93 octane (real expensive around here) is making me hesitant! I received an e-mail from JET stating I could run 89 octane with the JET chip. Any thought in this?


------------------
Paul... :-)
99 F-150 XLT SC Sport, 4.6L, Auto, CC
White, 4X2, Tow Package, CD, K&N Filter
More to come