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Old August 5th, 2008, 08:02 PM   #1
C.K.
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Default 2001 7.3 mileage question

I have a 2001 7.3 TD. It's a crew cab long bed with 3.73s and an auto. I am only getting around 14 maybe 15 mpg out of it.

Any suggestions? Not looking to burn up a track. Just would like a little better mileage and power for towing.
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Old August 5th, 2008, 08:20 PM   #2
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Programmer, larger exhaust and a free flowing filter kit. I have a 2000 ext cab long box with the same gearing as yours. I only have the Super Chips programer and a K & N filter kit. I run the programer in tow safe mode and empty get about 20mpg. Towing it drops to around 17mpg.
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Old August 5th, 2008, 09:25 PM   #3
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is a programmer better than doing just a chip?
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Old August 5th, 2008, 09:46 PM   #4
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The thing about the programers are you can change the program when you want. I haven't tried any of the others. Am happy with the Super Chips. I know others offer more options.
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Old August 5th, 2008, 10:08 PM   #5
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custom chips (Dp tuner and totaldieselperformace) will outperform any programmer/bully dog/superchip on the market.

I would stear more toward figuring out why the mileage is so low. Has it always been that low? how is the air filter? how is the fuel filter? how long have you had it? Jack up every corner to make sure it is free-wheeling well? Any brakes/bearings causing added drag?

The order of mods I always suggest is;
1- intake kit
2- cat back/downpipe back exhaust kit
3- chip/tuner
4- gages. EGT and trans temp are a MUSt with a chip, boost gage is noce too
5- downpipe (if not done in step 2)
6- injectors
7- turbo
8- big oil/ cam/ exh valves/ etc
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Old August 5th, 2008, 10:13 PM   #6
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That seems a little low but not that bad, I am getting 17-18 with my truck. I drive about 75% hwy.

Stock tire size? Pressure?

Their are a few things you can do cheaply that will help a little.

Run your tire pressure at max, I run my Load E's at 85 PSI.

Air Filter:
I like the #46637
It is a large paper filter and installs in place of the stock air box, all you need is a short piece of 4" od tube and clamps to connect the filter to the intake.
It can be found for around $30. online. I have seen a lot of trucks come in with "dusted" turbos from K&N's.

Exhaust:

A cheap upgrade is the Walker # 21470 muffler, it is a straight thru design, much better than the stock chambered muffler. Almost as quiet as the stocker, nice turbo whistle. Installs in place of the stock muffler, just flip the s-pipe 180* and weld a new hanger on.


As for the programmers, Jody @ DP tuner has a awesome 80HP Economy tune for the 7.3

www.dp-tuner.com
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Old August 5th, 2008, 10:15 PM   #7
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powertech makes pretty good programmers
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Old August 5th, 2008, 11:09 PM   #8
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go with a tonywildman or a dp flip chip. intake and exhaust. gauges are a must if you chip it.
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Old August 6th, 2008, 04:02 AM   #9
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thanks guys. I have only had the truck since April. Have not done much to it yet. I just did the rear brakes. They were junk. Next is the front, then new tires (the pressure may be a little low on these ones and they are about done) and an intake kit.

Thanks for the list Bones. I'll give it a try.
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Old August 6th, 2008, 09:09 AM   #10
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I bought mine in May of this year. I was getting 13mpg with a draging caliper and then up to 16 when I fixed that

Since then I have done:

DIY tymar intake with the 6637 filter
Stealth Power Bundle http://www.stealth-automotive.com/ which includeds a 6pos Tony Wildman Chip, 4" Turbo back exhaust, Apillar pod with matching paint and guges.
HP cross over
Zoodad mod
Foild removal

This tank I just hit a 1/4 down and am already at 200 miles

My last trip to KY and back I was empty and avg. 21mpg.

I love me TW chip!!

As for cost, the power bundle was $1,050.
HP Hose was $50
The Filter was $40
Mis parts for the DIY tymar $10
Zoodad was Free
Foil was Free

Search DIY Tymar, Foil delete and Zoodad mod on powerstroke.org.

Good luck

Edit: TW chips also help the transmission handle the extra power they make.

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Old August 6th, 2008, 04:41 PM   #11
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i would definitely hit up the dp tuner as bones stated earlier....a buddy noticed 4-5 mpg better not to mention the different towing/performance settings....what other truck is out there other than diesels that can push a button for 140 hp instantly? anyways i would look that up along with an intake and exhaust to let that engine breath easier
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Old August 20th, 2008, 10:40 AM   #12
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on my 02 heres the list of mods ive done. Edge Juice w/Attitude monitor, MBRP 4" Turbo back exhaust. According to the overhead computer im getting mid to high 19's in the city. I still have to install my AFE stage 2 air intake, and when i do that ill install an 05 grill and do the zoodad mod. After that i wanna do some trans work to keep it happy
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Old August 20th, 2008, 11:03 AM   #13
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Quote:
Originally Posted by Skooter_Built View Post
on my 02 heres the list of mods ive done. Edge Juice w/Attitude monitor, MBRP 4" Turbo back exhaust. According to the overhead computer im getting mid to high 19's in the city. I still have to install my AFE stage 2 air intake, and when i do that ill install an 05 grill and do the zoodad mod. After that i wanna do some trans work to keep it happy


Be sure to check your mileage by hand, those trip computers are known to be way off at times.

As for the trans, easiest to get an aftermarket valve body, but a trans-go kit and a Sonnax .500 line valve make it shift real nice!
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Old August 20th, 2008, 11:08 AM   #14
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Quote:
Originally Posted by frdboy View Post


Be sure to check your mileage by hand, those trip computers are known to be way off at times.

As for the trans, easiest to get an aftermarket valve body, but a trans-go kit and a Sonnax .500 line valve make it shift real nice!
ya, i do that every so often. I think the aftermarket valve body is the way to go.
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Old August 22nd, 2008, 03:04 AM   #15
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Quote:
Originally Posted by masterbeatty View Post
go with a tonywildman or a dp flip chip. intake and exhaust. gauges are a must if you chip it.

x2 Tony Wildman is the man for 7.3 tunes. Check out powerstroke.org for more info.
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Old August 23rd, 2008, 03:32 PM   #16
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Quote:
Originally Posted by Tony1784 View Post
x2 Tony Wildman is the man for 7.3 tunes. Check out powerstroke.org for more info.
Or ask me and I'll tell you that it's the Bombsinizzle!!
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Old August 24th, 2008, 02:08 AM   #17
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Do not use a washable oil gauze (K&N) type filter on a turbo diesel. Turbo diesels draw too much air and suck most of the oil out of the filter exposing the many "holes" in the gauze allowing dust to get through the filter. Use a dry paper element, and not in the stock air box, it is a poor design.
As far as changing programs, you can change programs on the fly with any chip. The Superchip style programmers can't do this. IIRC the new Edge Attitude style can. The F5 chips by DP Tuner can hold as many as 15 different programs. He is a very good programmer, as well as Tony Wildman, and Diesel Innovations. TW and DI use the older style chips which I believe hold up to 6 programs. There are many more programs available for the chips compared to any of the programmers, not to mention the possibility of live programming custom tailored to your specific truck. Which is better chip or programmer depends on what you want and how you use your truck. Don't expect a lot of MPG benefit, I would say 1-2 mpg. Any claims more than that I would not believe, or they came from that liar mileage computer in the over head console. Power increases can be significant. I would agree with the post by Bones for a list of what to do and when, I would add trans upgrades to the list.
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