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Old August 8th, 2011, 01:32 PM   #1
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Default 2001 7.3 powerstroke upgrades for mileage?

Looking at picking up a 01 excursion with a 7.3

wondering what the best options are for improving mileage? I've never played with the diesels before but I know there are programmers with mileage settings, towing settings, etc.
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Old August 8th, 2011, 01:35 PM   #2
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I just had a powerpup, CAI, and 4" exhaust with dynomax muffler and didn't go over 55MPH, then it got good, I think that was if I reset it and drove non-stop it calc'd out to 20MPG, onetime.
Otherwise our 2001 Excursion 7.3L got in the mid-high teens. There are TONs of 7.3L guys on here.
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Old August 8th, 2011, 01:37 PM   #3
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DIY intake, any exhaust with a downpipe, and then tony wildman tunes. If you are towing or beating on it, get gauges too. Keep your cruising RPM out of boost. If you don't have a boost gauge, keep it under 2000 RPM.
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Old August 8th, 2011, 01:39 PM   #4
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DIY intake, any exhaust with a downpipe, and then tony wildman tunes. If you are towing or beating on it, get gauges too. Keep your cruising RPM out of boost. If you don't have a boost gauge, keep it under 2000 RPM.
+1 on the downpipe.
I had triple guage pod and a Trans Pan, with Trans temp guage. I'd recommend them too, it held more fluid and it was nice to watch for it creeping up on 150. Then I could back down off 85MPH
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Old August 8th, 2011, 06:09 PM   #5
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Dont do anything but a mileage chip or computer darko. Any other mods like exhaust etc will cost more than what you will save in the amount of time you will keep the truck. Unless you really are thinking about keeping it longer than 6 months to a year
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Old August 8th, 2011, 07:11 PM   #6
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Dont do anything but a mileage chip or computer darko. Any other mods like exhaust etc will cost more than what you will save in the amount of time you will keep the truck. Unless you really are thinking about keeping it longer than 6 months to a year
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Old August 9th, 2011, 07:04 PM   #7
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I'm driving a '99 SuperDuty with 256,000 miles on it and get 19 mpg. My TJ gets 18. My route has very little stop and go.
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Old August 9th, 2011, 08:24 PM   #8
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Remove the factory air box and install a NAPA 6637 filter. Here is a how to link

http://www.guzzle7pt3.com/filtermind.php

I didn't worry about the filter minder and just tied it off to the harness on the fender.

Next remove the muffler and install a test pipe for now if you don't want to spend the money on a 4" pipe. Just my .02 from my experience but leave the exit behind the rear tire. I dumped mine in front of the rear tire and the droan in the cab was too much.

I don't have a tuner yet but I'm getting 15mpg all city, 17 mixed, 18 on the highway and 19 running 55 - 60 mph

When I get the extra funds I'll be getting a PHP tuner.
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Old August 10th, 2011, 06:37 AM   #9
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I have the Bully Dog deisel tuner. It has the 3 settings. I still try to keep the rpm's under 2000 as mentioned above. And don't use the cruise control I was told by my deisel mechanic. He also had me swap out to a K&N filter. I get 18.5-19.3(on performance mode) everyday driving now. 14.5 towing the jeep.(towing mode)
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Old August 10th, 2011, 06:40 AM   #10
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Quote:
Originally Posted by Bones View Post
DIY intake, any exhaust with a downpipe, and then tony wildman tunes. If you are towing or beating on it, get gauges too. Keep your cruising RPM out of boost. If you don't have a boost gauge, keep it under 2000 RPM.
This exactly and with the 4:10s I get 20mpg on the hway.
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Old August 10th, 2011, 07:02 AM   #11
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why not use the cruise control?
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Old August 10th, 2011, 07:06 AM   #12
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Quote:
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Keep your cruising RPM out of boost. If you don't have a boost gauge, keep it under 2000 RPM.
This

When I go slow mine gets great mileage. It's just that it goes fast so damn well.
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Old August 10th, 2011, 07:21 AM   #13
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why not use the cruise control?

Watch your rpm's when going up an incline while on cc. They almost redline immediatly rather then a graduale (sp?) raise. This is my first deisel, so when my mechanic tells me not to use it, i'm not using it.....
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Old August 10th, 2011, 07:22 AM   #14
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why not use the cruise control?
Hills throw it into boost.
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Old August 10th, 2011, 07:26 AM   #15
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Quote:
Originally Posted by jeepbrattt View Post
I have the Bully Dog deisel tuner. It has the 3 settings. I still try to keep the rpm's under 2000 as mentioned above. And don't use the cruise control I was told by my deisel mechanic. He also had me swap out to a K&N filter. I get 18.5-19.3(on performance mode) everyday driving now. 14.5 towing the jeep.(towing mode)
K&N filters are 7.3 killers...take that thing off NOW!! Plenty of horror stories about K&N on 7.3's in the interweb
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Old August 10th, 2011, 07:42 AM   #16
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Watch your rpm's when going up an incline while on cc. They almost redline immediatly rather then a graduale (sp?) raise. This is my first deisel, so when my mechanic tells me not to use it, i'm not using it.....
I don't really have any problems with that. I set my cruise and forget it. Went to WV over the 4th and it didn't even downshift going up the hills in the mountains, just held a steady 2,000 rpm.
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Hills throw it into boost.
is this a bad thing?

I typically set my cruise at 65 on long trips, average anywhere from 17-20 mpg depending on how hilly my trip is, but other than using a little extra fuel while climbing hills (with boost) I don't see how this could be bad for the truck, and I don't see it really affecting MPG all that much, putting my foot on the gas will do the same, unless we are talking about slowing down going up hills so we can save 5 cents on fuel?
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Old August 10th, 2011, 07:44 AM   #17
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Quote:
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K&N filters are 7.3 killers...take that thing off NOW!! Plenty of horror stories about K&N on 7.3's in the interweb
^^^^^agreed and they don't help at all.

Take it out and install the 6637. You'll get a nice turbo whoosh when it shifts too.
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Old August 10th, 2011, 08:01 AM   #18
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Old August 10th, 2011, 09:26 AM   #19
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I don't really have any problems with that. I set my cruise and forget it. Went to WV over the 4th and it didn't even downshift going up the hills in the mountains, just held a steady 2,000 rpm.


is this a bad thing?

I typically set my cruise at 65 on long trips, average anywhere from 17-20 mpg depending on how hilly my trip is, but other than using a little extra fuel while climbing hills (with boost) I don't see how this could be bad for the truck, and I don't see it really affecting MPG all that much, putting my foot on the gas will do the same, unless we are talking about slowing down going up hills so we can save 5 cents on fuel?
Without cruise there is enough torque to slowly push the skinny pedal going up hills to maintain speed without having to down shift. When the turbo spools up that is when you'll be sucking the fuel. Diesels have tons of torque which is why pulling is awesome and as you know non turbo diesels pull fine but take forever to get up to speed which is why having a turbo to boost HP which brings you to speed is fantastic but also sucks the fuel.

If you don't care about the few extra mpgs then by all means use cruise . . not going to hurt the truck at all but will hurt the penny pinchers.
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Old August 10th, 2011, 09:28 AM   #20
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I honestly have not noticed much of a difference in the amount of boost it sounds like I am building with cruise, or my foot, other than knowing I am building a bit less by allowing the truck to lose a few MPH on a hill with my foot.

I do not have a boost gage.
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