A delete kit removes emissions equipment from your 2019 Ford Powerstroke diesel engine

A delete kit for a 2019 6.7 Powerstroke removes or bypasses the diesel particulate filter (DPF), selective catalytic reduction (SCR) system, and exhaust gas recirculation (EGR) cooler — three emissions-control components Ford installed to meet federal pollution standards. The kit replaces these parts with simpler piping and reprograms the engine computer to stop looking for them.

Removing these components changes how your truck runs. The engine produces more power and torque, fuel economy often improves, and the truck no longer enters limp mode when the DPF clogs. However, delete kits are illegal for on-road use in all 50 states under the Clean Air Act, and installing one voids your Ford warranty. Fines for driving a deleted truck can reach $10,000 or more per violation, and some states treat it as a criminal offense.

Key Takeaways

  • A delete kit removes the DPF, SCR, and EGR cooler and reprograms the engine computer to stop monitoring them.
  • Deleted trucks produce more power and torque and typically run cooler, but they are illegal for street use under federal law.
  • Fines for driving a deleted truck range from hundreds to thousands of dollars per stop, and some states pursue criminal charges.
  • Ford will not honor warranty claims on any engine or emissions-related part after a delete kit is installed.
  • Delete kits are legal only for off-road use on private property where the truck will never be driven on public roads.

What each component does and why it gets deleted

The diesel particulate filter (DPF) traps soot and ash from the exhaust and periodically burns them off in a process called regeneration. When the DPF clogs, the truck enters limp mode, reducing power and fuel economy until you drive hard enough to trigger a regen cycle. Owners delete it to avoid these limp-mode episodes and the cost of DPF cleaning or replacement, which can run $1,500 to $3,000.

The selective catalytic reduction (SCR) system injects diesel exhaust fluid (DEF) into the exhaust to convert nitrogen oxides into harmless nitrogen and water. Deleting it eliminates the need to buy and refill DEF, which costs $5 to $10 per gallon. The EGR cooler recirculates hot exhaust gas back into the intake to lower combustion temperatures and reduce emissions. It is prone to carbon buildup and failure on high-mileage trucks, and deleting it removes that maintenance burden.

Together, these three systems reduce power output by roughly 50 to 100 horsepower and create heat and backpressure that wear the engine faster. Removing them restores that power and allows the engine to run cooler, which is why owners choose deletion — not primarily for emissions reasons, but for performance and reliability.

Why delete kits are illegal on public roads

The Clean Air Act makes it a federal crime to remove or disable emissions-control equipment on any vehicle driven on public roads. The law applies to every state and every county, and it does not matter whether your truck is registered, insured, or passes a state inspection. A single traffic stop can result in a fine of $2,500 to $10,000 per violation, and some officers cite the violation multiple times — once for the DPF, once for the SCR, once for the EGR — which multiplies the fine.

Several states, including California, Colorado, and New York, have added state-level penalties on top of federal fines. California treats deleted trucks as a smog-check failure and can impound the vehicle. Some states pursue criminal charges rather than civil fines, which can result in jail time and a permanent record. Insurance companies may also deny claims on a deleted truck, since the modification voids the vehicle's emissions certification.

What happens to your Ford warranty after deletion

Ford's warranty explicitly excludes any damage caused by modifications to the emissions system. Once a delete kit is installed, Ford will refuse to cover repairs to the engine, turbo, transmission, or any emissions-related part — even if the damage is unrelated to the deletion itself. This means a failed turbo, blown head gasket, or transmission problem that would normally be covered under the powertrain warranty becomes your responsibility to pay for.

Ford can detect a delete kit during a diagnostic scan at a dealership. The engine computer stores a record of the reprogramming, and the missing DPF, SCR, and EGR cooler are visible during inspection. Once deletion is discovered, the warranty is void for the life of the truck, even if you later reinstall the original emissions equipment.

Delete kit costs and what is included

A complete delete kit for a 2019 6.7 Powerstroke typically costs $800 to $2,500 depending on the brand and whether you include a tuner. The kit includes replacement exhaust piping, a new downpipe, a block-off plate for the EGR cooler, and sometimes a new intake manifold. Most kits do not include the engine tuning software — that is usually sold separately and costs $400 to $800.

Installation requires removing the turbo, intake manifold, and exhaust components, which takes 8 to 16 hours of labor at a diesel shop. Labor costs range from $800 to $2,000 depending on your location and the shop's hourly rate. Some shops bundle the kit, tuning, and labor into a package price, which can be cheaper than buying each piece separately.

Off-road use and legal alternatives

Delete kits are legal only for trucks used exclusively off-road on private property — never driven on public roads, highways, or even parking lots. If you own land and plan to use the truck only for farm work, construction, or recreational off-roading, deletion is not illegal in that context. However, you must be able to prove the truck is not street-driven, which means no registration, no insurance, and no public-road use whatsoever.

If you want more power and better reliability without the legal risk, consider these alternatives: a quality tuner that optimizes fuel injection and boost pressure without removing emissions equipment, a high-flow air intake, or a turbo upgrade. These modifications improve performance while keeping the truck street-legal and maintaining warranty coverage on non-modified components. A tuner alone can add 50 to 80 horsepower and improve fuel economy by 2 to 4 miles per gallon.

Resale value and buyer concerns

A deleted truck is harder to sell and typically sells for less than an unmodified truck of the same year and mileage. Buyers know the warranty is void, the engine may have accelerated wear, and they inherit the legal liability if caught driving it. Some buyers specifically seek deleted trucks for off-road use, but the pool is smaller than for stock trucks.

If you plan to sell the truck later, you may be able to reinstall the original DPF, SCR, and EGR cooler and have the computer reflashed to stock settings. However, this is expensive — often $3,000 to $5,000 — and does not fully restore the warranty. Dealerships can still see the deletion history in the computer's records, and some buyers will walk away once they know the truck was modified.

Frequently Asked Questions

Can I get caught driving a deleted truck?

Yes. Police can perform a visual inspection of the exhaust system, and a diesel mechanic or emissions inspector can scan the engine computer in minutes and see that the DPF and SCR are missing. Some states conduct random emissions testing at inspection stations. The longer you drive a deleted truck, the higher the risk of a stop.

What if I delete the truck but keep the original parts?

Keeping the parts does not reduce your legal liability. The truck is still illegal to drive on public roads because the emissions equipment is not installed and the engine computer is reprogrammed. Reinstalling the parts and reflashing the computer is the only way to make it legal again, and that process costs $3,000 to $5,000.

Will a delete kit damage my engine?

A delete kit does not inherently damage the engine, but it removes cooling and backpressure that the engine was designed to handle. Over time, higher combustion temperatures and increased boost pressure can accelerate wear on the turbo, pistons, and valves. Many deleted trucks run fine for years, but some develop problems earlier than stock trucks.

Can I pass emissions testing with a deleted truck?

No. A deleted truck will fail any emissions test because the DPF and SCR are not present and the engine computer no longer monitors them. Some states do not test diesel trucks, but most do, and a failed test will be reported to your state's motor vehicle department.

Is there a way to delete my truck legally?

Only if the truck is never driven on public roads. If you own private land and use the truck exclusively for off-road work or recreation, deletion is legal in that context. You cannot register or insure a deleted truck for street use in any state.