Diesel Delete Kit Ford 6.7: Complete Buyer's Guide for 6.7L Powerstroke Owners

The 6.7L Powerstroke runs three separate emissions control systems, and a complete delete kit addresses all three. Here's what each one does from the factory — and why off-road enthusiasts remove them.

DPF (Diesel Particulate Filter) — captures soot particles in a ceramic honeycomb substrate. The PCM periodically triggers a regeneration event, injecting raw fuel into the exhaust stream to burn off accumulated soot. Regens add backpressure, consume extra fuel, and generate excessive exhaust heat. A plugged DPF can also trigger a derate or limp mode.

EGR (Exhaust Gas Recirculation) — routes hot, soot-laden exhaust back into the intake manifold to lower combustion temperatures and reduce NOx output. On the 6.7 Powerstroke, this deposits carbon through the intake runners and EGR cooler over time, and EGR cooler failure is a well-documented failure mode on this platform.

DEF/SCR (Diesel Exhaust Fluid / Selective Catalytic Reduction) — injects urea solution upstream of the SCR catalyst to convert NOx into nitrogen and water. Running low on DEF or experiencing a NOx sensor fault can trigger a derate countdown that limits the truck to walking pace within a set number of starts.

A full delete kit for the Ford 6.7 Powerstroke ^[68] includes a straight-through DPF delete pipe (typically 4" or 5" diameter stainless steel), an EGR delete hardware kit with block-off plates and coolant reroute fittings, and a matched tuner loaded with delete calibrations. The tuner is non-negotiable — without it, the PCM immediately sets fault codes for missing DPF flow, EGR flow, and DEF dosing, and the truck will derate or enter limp mode within miles.

The Diesel Dudes Technical Team notes that our year-specific Ford 6.7 bundles are engineered so the tuner, pipe, and EGR kit work as a matched system — eliminating the guesswork of sourcing three pieces from three different vendors.

Disclosure: The Diesel Dudes sells some of the products mentioned in this article. Our recommendations are based on hands-on testing and customer feedback.

Let's be direct about the legal landscape, because this matters before you spend a dollar.

The federal Clean Air Act, codified at 42 U.S.C. § 7522(a)(3)(A), prohibits any person from removing or rendering inoperative any device or element of design installed on a motor vehicle in compliance with EPA regulations — prior to or after sale. The DPF, EGR system, SCR/DEF system, and associated OBD-II monitors on your 6.7 Powerstroke are all emissions control devices or design elements under this statute.

EPA enforcement authority for mobile sources flows through 40 CFR Part 86, which covers emission standards for new motor vehicles. The EPA has pursued major enforcement actions against manufacturers and sellers of defeat devices — hardware and software designed to disable emissions controls on street-driven vehicles. Penalties per violation can be substantial, and they can apply to shops, tuners, and in some cases vehicle owners.

At the state level, the picture gets stricter. California operates under the California Air Resources Board (CARB), which only allows performance parts carrying a CARB Executive Order (EO) number for on-road use. DPF, EGR, and DEF deletes have never received EO numbers. States like New York and Colorado run OBD-II readiness checks and visual inspections that will catch deleted trucks immediately.

The bottom line: every diesel delete kit sold by The Diesel Dudes — including all Ford 6.7 Powerstroke bundles — is intended exclusively for off-road, competition, or race vehicles not registered for street use. Using a deleted truck on public roads can result in failed inspections, fines, and potential registration denial.

Legal Notice: Removing or tampering with emissions equipment may violate the federal Clean Air Act and state emissions regulations. Penalties can include fines up to $5,000 for individuals. Check your local and state laws before modifying emissions equipment on any vehicle driven on public roads.

Here's a breakdown of every component you should expect in a quality full delete bundle for the 6.7 Powerstroke:

What's Included in a Ford 6.7 Powerstroke Full Delete Bundle

• DPF/CAT Delete Pipe — replaces the factory DPF and downstream catalytic converter section with a straight-through mandrel-bent pipe. The Diesel Dudes offers both 4" ^[33] and 5" ^[14] diameter options for 2011–2019 trucks, and year-specific pipes for the 2020–2022 ^[35] and 2023–2026 platform. A larger-diameter pipe reduces exhaust backpressure for better turbo spool.
• EGR Delete Hardware Kit — billet aluminum or steel block-off plates machined to OEM flange specs, coolant reroute fittings to maintain coolant circuit integrity, gaskets, and all mounting hardware. The 6.7 Powerstroke runs both a high-pressure and low-pressure EGR circuit — a complete kit addresses both. The pass-through design EGR kit ^[2] maintains coolant flow while eliminating exhaust recirculation entirely.
• PCM Tuner — the brain of the entire delete system. The tuner disables DPF regeneration cycles, EGR valve commands, DEF dosing, NOx sensor fault monitoring, and all related OBD-II readiness monitors. It also recalibrates fueling, boost targets, and timing for the now-free-flowing exhaust. Options include the EZ LYNK Auto Agent for cloud-based tune delivery ^[57] and the BullyDog BDX for 2011–2019 trucks ^[20]. For 2023–2025 6.7L Powerstroke, dedicated EZ LYNK software ^[66] is available.
• CCV Delete Kit (often sold as an add-on) — eliminates the crankcase ventilation system's connection to the intake, preventing oil vapor recirculation into the intake tract. Available for 2011–2026 Powerstroke ^[24].
• Tuner Harness Plug Kit — a Shibby Engineering adapter that simplifies tuner installation on the 6.7L and 6.4L Powerstroke ^[108], providing clean plug-and-play ECM connectivity without cutting factory wiring.

One common misunderstanding: there is no physical pipe that replaces the DEF/SCR system in most kits. The tune handles DEF disable in software by turning off dosing commands and suppressing the NOx fault loop. Some owners physically remove the DEF tank and SCR catalyst hardware, but the critical piece is always the tune.

The 6.7L Powerstroke platform spans the F-250, F-350, and F-450 Super Duty lineup starting in 2011. Each generation introduced updated emissions hardware, turbo designs, and PCM strategies that directly impact which delete kit fits your truck. The Diesel Dudes stocks year-matched bundles ^{[110] [111]} for every generation — here's how they break down:

Year Range	Ford Super Duty	Engine Notes	Full Delete Bundle
2011–2012	F-250/350/450	First-gen 6.7L; early EGR layout, single DPF	2011–2012 Bundle [68]
2013–2014	F-250/350/450	Updated EGR routing; same body style	2013–2014 Bundle [69]
2015–2016	F-250/350/450	Turbo and emissions layout updates; still steel body	2015–2016 Bundle [70]
2017–2019	F-250/350/450	Aluminum body; updated sensors, different tuning platform	2017–2019 Bundle [71]
2020–2022	F-250/350/450	Higher factory HP; revised exhaust routing, different pipe fitment	2020–2022 Bundle [72]
2023–2026	F-250/350/450	Latest-gen emissions strategy; updated PCM/tuning approach	2023–2026 Bundle [73]

Cab & Chassis configurations (F-350/450 C&C) require a specific extension pipe upgrade ^[76] because the exhaust routing and chassis length differ from standard pickup builds. Never assume a pickup-spec pipe will bolt onto a C&C without verifying with our support team first.

Here's the honest breakdown of what a full delete can do for a 6.7 Powerstroke in an off-road build. These figures are vendor-reported and user-reported from off-road configurations — not EPA-certified data — and results vary based on tune quality, truck condition, and use case.

Horsepower & Torque: A well-tuned full delete on the 6.7 Powerstroke can yield vendor-reported gains up to approximately 150 HP in performance tune levels. The factory 2017–2019 6.7 Powerstroke made 450 HP and 935 LB-FT of torque at the crank — a quality delete tune with a free-flowing exhaust removes the primary restriction that limits those numbers. Multiple power levels (tow, street, performance) are typically available on platforms like the EZ LYNK Auto Agent ^[57] and BullyDog BDX ^[20], letting you dial in power for the application.

Fuel Economy: Vendors commonly report 10–20% fuel economy improvements after a full DPF/EGR delete. The primary driver is eliminating active DPF regeneration events — each regen cycle injects raw fuel into the exhaust stream and burns it, consuming diesel without contributing to forward motion. Removing that cycle entirely means every drop of fuel goes toward moving the truck. The EGR delete also reduces pumping losses and keeps intake charge temperatures lower, which improves combustion efficiency.

EGT Reduction: Exhaust gas temperatures (EGTs) drop noticeably under sustained high-load conditions after deleting the DPF. The factory DPF creates backpressure that traps heat in the exhaust stream. Replacing it with a straight 5" turbo-back exhaust ^[14] allows heat to exit the engine more rapidly, which is especially significant when towing at high altitude or in hot weather.

Turbo Response: The 6.7 Powerstroke's variable geometry turbocharger (VGT) responds to changes in exhaust backpressure. Lower backpressure from a delete pipe means faster spool and less lag off the line — a noticeable difference when pulling heavy loads from a standstill.

Maintenance Reduction: No more DPF cleaning or replacement (OEM DPF replacement can run $2,000–$4,000 in parts alone). No DEF refills. No stuck EGR valves or cracked EGR coolers fouling your intake with coolant.

A straight conversation about what can go wrong — because no one should be surprised by these after the fact.

Warranty Void: Ford's factory warranty explicitly excludes coverage for damage caused by tampering with emissions systems. Any dealer technician who finds deleted emissions hardware or a modified PCM tune during a warranty claim can — and typically will — deny that claim. This applies to powertrain coverage, not just emissions components.

Inspection & Resale Issues: In states running OBD-II readiness checks or visual emissions inspections, a deleted 6.7 Powerstroke will fail immediately. OBD-II readiness monitors for the DPF, EGR, and catalyst systems will show as incomplete or disabled. Resale can also be complicated — future buyers in regulated states may demand OEM emissions hardware reinstallation before purchase.

Tune Quality Risk: This is where the real mechanical danger lives. A poorly written delete tune can set aggressive fueling tables without corresponding transmission calibration, resulting in excessive turbine inlet temperatures, slipping transmissions, and shortened drivetrain life. An incomplete tune that fails to fully disable all DPF/EGR/DEF diagnostic monitors will still set fault codes and trigger derates — defeating the entire purpose of the delete. The EPA's enforcement posture [per 40 CFR Part 86] has also led to a market flooded with generic tunes of questionable origin and quality.

Hardware Fitment Issues: Generic delete pipes sourced from unknown suppliers frequently have fitment problems — incorrect hanger placement, interference with frame crossmembers, and thin-wall construction that cracks at weld joints. A rattling or leaking exhaust pipe undermines every benefit of the delete.

Environmental Impact: Removing DPF, EGR, and SCR systems increases tailpipe emissions of particulate matter (PM), NOx, and hydrocarbons. This is the core reason these systems exist and why federal law prohibits their removal on street-driven vehicles. Per the EPA's Clean Air Act framework, DPF-equipped diesel trucks are required to reduce PM emissions by over 90% compared to pre-DPF standards — deleting that hardware on a public road vehicle eliminates that reduction entirely.

Based on hundreds of TDD installations across the 6.7 Powerstroke platform, here's a high-level workflow that covers the full process. This is an overview — not a substitute for the detailed instructions included with every TDD kit.

1. Preparation: Park on level ground, chock all wheels, disconnect both batteries, and allow the truck to cool completely. Gather your tools: 3/8" and 1/2" drive socket sets, extensions, universal joints, penetrating oil (factory exhaust clamps are often heavily corroded), a floor jack and stands, and shop rags. Budget 30–45 minutes just for prep and soaking seized hardware with penetrating oil before attempting removal.
2. DPF/Exhaust Removal: Disconnect all EGT (exhaust gas temperature) sensors, NOx sensors, and DPF differential pressure sensor wiring harnesses. Unbolt the exhaust clamps and hangers securing the DPF assembly, and lower the unit out of the chassis — the factory DPF on the 6.7 Powerstroke is a heavy, bulky assembly. Install the delete pipe ^[33] or 5" full exhaust ^[14], reusing factory hangers and ensuring at least 1" clearance from the driveshaft, frame, and body panels throughout the routing.
3. EGR Delete: Drain the coolant system to prevent spillage. Remove the intake charge air pipe for access to the EGR cooler and valve. Unbolt and remove the EGR cooler and valve assembly. Install the block-off plates to both the intake and exhaust flange connections, and route the coolant bypass fittings per kit instructions to keep the cooling circuit pressurized and functional. The pass-through EGR kit ^[2] simplifies this step by maintaining the coolant circuit without dead-ending any passages.
4. Tuner Flash: Connect your tuner to the OBD-II port or via the harness plug kit ^[108]. Select the correct vehicle year, transmission type, and desired power level. Flash the PCM (and TCM if supported) per platform-specific instructions. Maintain stable battery voltage (above 12.6V) throughout the flash — an interrupted flash can corrupt the PCM calibration.
5. Post-Install Verification: Refill and bleed the coolant system. Start the truck and check for exhaust leaks at all connection points, coolant leaks at the EGR block-off area, and boost leaks at intake connections. Monitor EGTs and boost pressure on the first drive cycle to confirm the tune is operating correctly.

Our technical team typically sees competent DIY installs completed in 6–10 hours for 2011–2016 trucks and 8–12 hours for 2017–2022 models due to tighter access. Rust on older trucks can add significant time.

Not all delete kits are created equal. Here's how to evaluate any kit — including ours — before committing.

Year-Specific Fitment: Every generation of the 6.7 Powerstroke has different exhaust routing, EGR hardware geometry, and PCM architecture. A kit listed as "universal 6.7 Powerstroke" is a red flag. The Diesel Dudes Ford delete tune software library ^[117] is organized by exact model year with separate calibration files for each platform generation — no generic catch-all files.

Material Quality: Mandrel-bent stainless steel pipe holds up to heat cycling without cracking at weld joints. Thin-wall mild steel pipes rust out from the inside within a few seasons in northern climates. Check whether the kit specifies wall thickness and material grade — quality kits do.

Tune Completeness: A proper delete tune must disable every DPF, EGR, and DEF diagnostic monitor in the PCM — not just the most obvious ones. Incomplete tunes leave ghost codes that trigger derates weeks after installation. The EZ LYNK platform ^[62] supports lifetime tune updates, meaning as Ford PCM strategies evolve, your calibration file can be updated remotely without reflashing from scratch.

Transmission Calibration: The 6.7 Powerstroke mates to either a 6R140 TorqShift or a 10R140 automatic transmission depending on year. Both TCMs take commands from the PCM. A quality delete tune includes transmission calibration to handle the increased torque output — tunes that skip TCM calibration accelerate clutch pack wear.

After-Sale Support: Delete installs on late-model trucks occasionally encounter platform-specific quirks — sensor locations that moved between model years, PCM security protocols on 2020+ trucks, or C&C pipe routing differences ^[76]. You want a vendor whose support team knows the 6.7 Powerstroke platform in detail, not a generic customer service line.

Here's what separates a TDD Ford 6.7 delete bundle from a generic kit assembled from mismatched parts.

Matched System Engineering: Every Ford 6.7 Full Delete Bundle pairs a proven tuner with a correctly spec'd delete pipe and EGR hardware kit for that exact model year. The 2017–2019 bundle ^[71] uses a different EGR kit ^[4] and pipe ^[34] than the 2013–2014 bundle ^[69] — because the platforms are genuinely different. Sourcing those three pieces separately and hoping they work together is how owners end up with fitment headaches and incomplete DTCs.

Tuner Options That Match Your Use Case: TDD bundles come with multiple tuner choices. The BullyDog BDX ^[20] handles 2011–2019 trucks with an OBD-II plug-and-play interface and multiple power levels accessible from the cab. The EZ LYNK Auto Agent ^[57] adds cloud-based tune delivery with lifetime update support — critical for 2020+ trucks where Ford periodically updates PCM security strategies. The Ford delete tune software collection ^[117] covers custom calibrations for each platform.

Real Customer Validation: The 2017–2019 Ford 6.7 Powerstroke Full Delete Bundle carries 353 verified reviews ^[71]. The 2013–2014 bundle has 107 verified reviews ^[69]. These aren't manufactured numbers — they reflect real-world feedback from owners who installed these kits on their trucks.

EGR Delete Kit Coverage Across All 6.7 Generations: From the 2011–2014 EGR delete kit ^[43] to the pass-through design covering 2011–2025 ^[2] to the dedicated 2020–2025 kit ^[44], TDD stocks EGR hardware matched to every major 6.7 Powerstroke configuration. The pass-through design ^[2] is particularly popular because it maintains the coolant circuit path without dead-ending any passages — eliminating the risk of air pockets in the cooling system after installation.

C&C Support: Cab & Chassis Ford Powerstroke delete bundles are available for 2008–2019 ^[21] with extension pipe upgrades ^[76] for the longer chassis configurations. Generic pickup-spec pipes simply don't fit C&C trucks — TDD stocks the correct hardware.