2017 6.7 deleting
Mountain Pass
Joined: Dec 2019
Posts: 203
Likes: 49
From: Black Diamond, WA
Now I can't speak to the 2017 (Yet), but I did delete my 2011 a few years ago before it got traded in.
Fuel Mileage - Maybe a little better driving light (1-3MPG), towing I seemed to get 4-5MPG better if I kept my foot out of it. Biggest problem with mileage is keeping your foot out of it. I think the biggest benefit is no more DEF and you won't have to Regen anymore.
Power gains - I had Shift of the fly (SOTF) tunes, and they were pretty impressive. There were significant power gains, but it depends what you plan to do with the truck. If you are going to delete, you should at least install an EGT monitor to keep track of your exhaust temps. You shouldn't tow heavy on a hot tune.
Problems - I never had any problems with my deleted 11. The only reason my current one isn't is because I'm still in warranty.
My experience was that the 2011 with a 5" exhaust no muffler was still quiet enough on idle, but it could get obnoxious towing depending on the load. If I decide to delete my current one, I will probably install a muffler.
Fuel Mileage - Maybe a little better driving light (1-3MPG), towing I seemed to get 4-5MPG better if I kept my foot out of it. Biggest problem with mileage is keeping your foot out of it. I think the biggest benefit is no more DEF and you won't have to Regen anymore.
Power gains - I had Shift of the fly (SOTF) tunes, and they were pretty impressive. There were significant power gains, but it depends what you plan to do with the truck. If you are going to delete, you should at least install an EGT monitor to keep track of your exhaust temps. You shouldn't tow heavy on a hot tune.
Problems - I never had any problems with my deleted 11. The only reason my current one isn't is because I'm still in warranty.
My experience was that the 2011 with a 5" exhaust no muffler was still quiet enough on idle, but it could get obnoxious towing depending on the load. If I decide to delete my current one, I will probably install a muffler.
Tuned
Joined: Sep 2019
Posts: 309
Likes: 56
From: Dallas, TX
Some might turn it away, others won't blink an eye. It's not illegal for them to do routine maintenance on a truck that they didn't delete. That's between you and the EPA.
I have 3.55 gears and 285/75R18 all-terrains and I get 20-25mpg highway now. I have to stop to pee and get rid of the pain in my butt before the truck needs to refuel on a trip.
OEM trans and engine tuning minus emissions. It's easily done and hurts nothing. Even my oil comes out a little clearer.
I have 3.55 gears and 285/75R18 all-terrains and I get 20-25mpg highway now. I have to stop to pee and get rid of the pain in my butt before the truck needs to refuel on a trip.
OEM trans and engine tuning minus emissions. It's easily done and hurts nothing. Even my oil comes out a little clearer.
Trending Topics
7th Gear
Joined: Nov 2020
Posts: 7
Likes: 0
Do it.
I deleted my 19 a few months ago, and put a 5" straight pipe. Took about 4 hours by myself with no help. Mpg is averaging around 17 and has way more power. I also have a 4" lift with 37x12.5 and trimmed my hair dam, so aerodynamics are not nearly as good as stock.
I deleted my 19 a few months ago, and put a 5" straight pipe. Took about 4 hours by myself with no help. Mpg is averaging around 17 and has way more power. I also have a 4" lift with 37x12.5 and trimmed my hair dam, so aerodynamics are not nearly as good as stock.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Cargo Master
Joined: Jul 2017
Posts: 2,301
Likes: 554
i'm going to delete mine this fall....(i mean catalytic theft is way up around here)
theyre pretty quiet with just a delete pipe. it also retains the OEM resonator above the axle. I did find a 5" exhaust with a muffler that should help with drone, but i think i'll just run the delete pipe for now since i can get one for like $100 locally.
are you going to do the egr block off plates or just unplug it?
my plan is to run a tow tune 100% of the time with no SOTF. I dont trust myself enough to have those power settings readily available for shenanigans.
theyre pretty quiet with just a delete pipe. it also retains the OEM resonator above the axle. I did find a 5" exhaust with a muffler that should help with drone, but i think i'll just run the delete pipe for now since i can get one for like $100 locally.
are you going to do the egr block off plates or just unplug it?
my plan is to run a tow tune 100% of the time with no SOTF. I dont trust myself enough to have those power settings readily available for shenanigans.
Tuned
Joined: Sep 2019
Posts: 309
Likes: 56
From: Dallas, TX
If you’re gonna do it, do it properly and remove the EGR. There’s not really any highway drone, I just hear nice diesel motor purr.
I also don’t think you’ll be wanting for power with the OEM tune vs the tow tune. It’s amazing what these trucks do when they breathe free.
I also don’t think you’ll be wanting for power with the OEM tune vs the tow tune. It’s amazing what these trucks do when they breathe free.
Lead Driver
Joined: Feb 2022
Posts: 7,984
Likes: 4,058
Good luck finding both parts and a tuner though, EPA came down really hard on US companies selling and doing. I recommend a Twister if you go 5", straight piped at 60MPH will make your ears bleed. You still get that nice throaty exhaust note, but the drone is gone. It's basically a can with a twisted piece of metal down the middle so no change in back pressure, it just smooths out the exhaust to kill the drone.
4wd Low
Joined: Jan 2018
Posts: 14
Likes: 7
Originally Posted by acdii;[url=tel:20489148
20489148[/url]]Good luck finding both parts and a tuner though, EPA came down really hard on US companies selling and doing. I recommend a Twister if you go 5", straight piped at 60MPH will make your ears bleed. You still get that nice throaty exhaust note, but the drone is gone. It's basically a can with a twisted piece of metal down the middle so no change in back pressure, it just smooths out the exhaust to kill the drone.
5th Wheeling
Joined: Oct 2006
Posts: 30
Likes: 13
Biggest downside is potential issue at resale and the exhaust smells. I’m a running a 4” “race pipe” with no muffler and it’s been fine. I have a muffler but haven’t had it welded in yet. It’s louder at idle and in parking garages but there’s not enough drone on the highway to bother me. 80HP tune is significantly more powerful than stock (which already had more than enough power.) The 200 HP tune smokes more and didn’t feel any more powerful to me…
PM me for specifics if you want vendors…