Delete info
Cross-Country
Joined: Mar 2021
Posts: 85
Likes: 38
From: PNW
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
I'm no scientist or a scholar but I do know engines and how they work. and there is no way you can add 90 H/P and not add more fuel. If you could please tell me how this is done I would appreciate it.
Mountain Pass
Joined: Mar 2019
Posts: 175
Likes: 6
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
From what i've read, the tuning changes the injection timing and the higher hp tunes have more timing so assuming you can control your right foot, you will see a bump in mpg. From my personal experience, ive hand calculated each tank of fuel and running the +200hp Extreme tune gets, on average, 0.5 to 1mpg than the +50hp Tow tune. On my two most recent fillups, +50hp got 15.78mpg and the +200hp got 16.78mpg.
FTE Legend
Joined: Mar 2017
Posts: 31,777
Likes: 9,114
From: Western NY
I do understand that having more power keeps the truck at speed easier but delete tunes turn on more fuel to make that power. Not doubting your word but I'm sure you're not racing red light to red light either.
Cross-Country
Joined: Mar 2021
Posts: 85
Likes: 38
From: PNW
Considering my tires have a max speed of 87 mph and my truck weighs 8200lbs, there is no racing going on.
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FTE Legend
Joined: Mar 2017
Posts: 31,777
Likes: 9,114
From: Western NY
I'm not saying you. I have just always been skeptical of guys saying they had big gains with deletes with the way most drive. Good for you that you are getting 4 mpg better. I'm sure gains can be realized by keeping the right foot out of it.
I still get in the 14s mpg range with regens now on winter fuel. But I have slowed down some on the expressway due to the cost of fuel now. I fueled up today and it dropped 6 cents to $3.46. So I think I'm up at least 0.5 mpg due to slowing down on the expressway.
When I said racing, I mean folks acting like they have to race past every truck they see. Obviously that isn't you. But that doesn't just apply to pickups... It's everyone.
I still get in the 14s mpg range with regens now on winter fuel. But I have slowed down some on the expressway due to the cost of fuel now. I fueled up today and it dropped 6 cents to $3.46. So I think I'm up at least 0.5 mpg due to slowing down on the expressway.
When I said racing, I mean folks acting like they have to race past every truck they see. Obviously that isn't you. But that doesn't just apply to pickups... It's everyone.
Junior User
Joined: Sep 2021
Posts: 71
Likes: 21
You increase the *thermal* efficiency of the engine in part by deleting the EGR. The old 7.3 PSD was at 250 hp stock on its last model year. The 2011 6.7 PSD came out 400 hp but maintained if not improved *fuel* efficiency and is now at 475 hp for 2020+.
The biggest thing is the EGR returns "dirty" air to the engine reducing its efficiency and causing many wear issues. Heavy-duty equipment manufacturers such as Case IH are switching to Tier 4 emission SCR-only. Honestly, if our trucks were SCR-only there would be little reason to delete them.
My 2011 truck when stock was getting 14ish mpg at 65 mph on 35" mud tires. After a lot of mods, it gets 19ish mpg. I have a 5 position switch and have yet to dyno it, so idk what horsepower is on position one but even on position 5 it gets like 15 mpg. Position one is way more HP than stock... 5 puts me in between 550-600 with 600 being the turbo's "rated" max capability. I also drive like a grandma because I commute over 500 miles a week right now.
https://www.caseih.com/northamerica/...fficiency.aspx
The biggest thing is the EGR returns "dirty" air to the engine reducing its efficiency and causing many wear issues. Heavy-duty equipment manufacturers such as Case IH are switching to Tier 4 emission SCR-only. Honestly, if our trucks were SCR-only there would be little reason to delete them.
My 2011 truck when stock was getting 14ish mpg at 65 mph on 35" mud tires. After a lot of mods, it gets 19ish mpg. I have a 5 position switch and have yet to dyno it, so idk what horsepower is on position one but even on position 5 it gets like 15 mpg. Position one is way more HP than stock... 5 puts me in between 550-600 with 600 being the turbo's "rated" max capability. I also drive like a grandma because I commute over 500 miles a week right now.
https://www.caseih.com/northamerica/...fficiency.aspx
5th Wheeling
Joined: Jan 2020
Posts: 39
Likes: 11
From: Milwaukie, Oregon
joshwyle, I am getting same mileage as you, I also am looking for options to improving mileage and longevity of my motor.😀
Logistics Pro
Joined: May 2017
Posts: 3,523
Likes: 483
From: Southern OH
Thats interesting. I do think advancing the timing a couple degrees will help but changing the injector timing means keeping them open a little longer not for a shorter period of time. I do believe that is you drive like a grandma you will get better fuel millage. My wife gets 3 to 4 MPG's better than me in her Taurus SHO. If I have it, I'm going to use it LOL
Laughing Gas
Joined: Feb 2007
Posts: 769
Likes: 156
Hello, Im new here
I have a 2017 F350 drw, crew, long bed. Im looking at deleting it mainly to try n improve mpg more than anything. My mpgs seem to be getting worse. Im sure partly due to winter fuel and my foot is getting heavier lol. Ive also read that there are huge benefits to longevity of truck. Ive looked at a few kits but really not sure. Do i need egr kit or just unplug? What tuner should i get? Should i buy the kit or separately, and what kits are recommended. I tow a 5er towhauler. Live in NC and travel to NH alot riding sxs. Any info would be very much appreciated. Im just not sure where to begin
I have a 2017 F350 drw, crew, long bed. Im looking at deleting it mainly to try n improve mpg more than anything. My mpgs seem to be getting worse. Im sure partly due to winter fuel and my foot is getting heavier lol. Ive also read that there are huge benefits to longevity of truck. Ive looked at a few kits but really not sure. Do i need egr kit or just unplug? What tuner should i get? Should i buy the kit or separately, and what kits are recommended. I tow a 5er towhauler. Live in NC and travel to NH alot riding sxs. Any info would be very much appreciated. Im just not sure where to begin
