Delete Kit Reviews: What to Look for Before You Buy

Here's the thing — a lot of guys get burned buying a "delete kit" that's really just a pipe and a tune file, with no physical EGR (Exhaust Gas Recirculation) removal. That's a problem. The EGR system recirculates hot, carbon-laden exhaust gases back into the intake. Leave that hardware in place and you're still cooking your intake manifold with soot and heat, regardless of what the tune says.

A proper full delete bundle covers all three systems:

• Tuner or Bench Flash: Reflashes the ECM to disable DPF regeneration cycles, EGR commands, DEF dosing, and SCR (Selective Catalytic Reduction) operation. Without this, your truck throws codes and goes into limp mode.
• EGR Delete Kit: Physically removes the EGR valve and cooler, replacing them with block-off plates and bypass hardware. This is what cleans up your intake tract and drops coolant temps.
• DPF Delete Pipe or Full Exhaust: Replaces the DPF and catalytic converter section — typically a 4" or 5" diameter straight pipe — to eliminate backpressure and allow free exhaust flow.

If a kit doesn't include all three, it's not a full delete. It's a partial fix that leaves problems on the table.

Buckle up — this is where a lot of guys learn expensive lessons. YouTube reviewer breakdowns of 6.4L Powerstroke installs have flagged repeated programmer disconnect errors mid-flash, a problem that has nothing to do with the delete tune itself and everything to do with cheap handheld hardware. According to that YouTube walkthrough, the physical programmer unit itself was the failure point — connection drops during the flash cycle, leaving the ECM in a partial-write state that requires a bench flash to recover.

That's a nightmare scenario. A mid-flash failure on a 6.7L Cummins or a 6.7L Powerstroke can brick an ECM. Recovery means pulling the module and paying a shop — potentially $400–$800 in labor on top of whatever you already spent on the kit.

Other common complaints across the delete market:

• Fitment issues: Pipes that don't align with factory hangers, requiring trimming or custom brackets — especially on Cab & Chassis configurations that don't share the same frame geometry as standard pickup builds.
• Leftover DTCs: Kits that delete the DPF hardware but don't include updated SCR and DEF disable tune parameters, leaving P0420, P20EE, or P229F codes active.
• EGR hardware quality: Thin block-off plates that warp under heat cycling, eventually allowing EGR passage to crack open. Quality kits use CNC-machined aluminum or billet steel plates.

The bottom line: the weakest link in any delete kit is almost always the tuner hardware or the tune file quality — not the pipes.

Let's talk about what a quality kit actually looks like on paper before it ever hits your driveway.

Evaluation Factor	What to Look For	Red Flag
Year/Engine Fitment	Kit lists exact year range and engine code (e.g., 2013–2018 6.7L Cummins)	"Universal fit" or vague compatibility claims
Tuner Hardware	Established platform with track record (EFI Live, EZ Lynk, aftermarket tuner)	Off-brand handheld with no support documentation
Tune File Coverage	All emission DTCs addressed: DPF, EGR, DEF, SCR, DOC	Tune only disables DPF codes, leaves SCR/DEF active
EGR Hardware Quality	CNC-machined block-off plates, stainless or billet steel construction	Stamped thin-gauge plates, no brand markings
Post-Sale Support	Phone/email support, lifetime tune updates, clear install documentation	No contact info, no update policy, forum-only help

Platform-specific fitment is non-negotiable. A delete pipe designed for a 2013–2018 Ram 6.7L Cummins has different flange geometry, hanger positions, and pipe routing than a 2019–2021 build. Buying a "close enough" pipe because it was cheaper almost always means a return, a weld, or a leak at the flange.

Spend any time on RamForum in the 2014+ Cummins threads and the message comes through loud and clear. According to RamForum community discussions on the best DEF and EGR delete options, the prevailing advice from experienced members is to avoid companies you know nothing about — the risks compound quickly. ^[1] The concerns aren't just about performance; they're about legal exposure, the ability to resell the truck, and whether you can get support when something goes sideways six months after the install.

That RamForum thread specifically flags four categories of risk that experienced users cite when evaluating any delete kit purchase: legal issues, reliability issues, service issues, and resale issues. ^[1] Under federal law, Clean Air Act Section 203(a) prohibits tampering with emissions controls on road-registered vehicles^[2] — a risk every buyer carries individually. Every one of those issues is manageable if you buy from a source with a real track record — and every one of them becomes a problem when you don't.

The community consensus across Cummins, Powerstroke, and Duramax forums lines up around a few consistent preferences:

• Physical EGR removal beats software-only solutions every time for long-term engine cleanliness
• Selectable tune levels (economy, tow, performance) are expected in a quality kit — a single flat tune isn't enough
• Support availability after the sale matters as much as the install quality
• Verified reviews with install photos carry more weight than star averages alone

The guys who've been through a bad kit experience all say the same thing: they wish they'd paid for quality the first time instead of chasing the budget option twice.

Here's the technical breakdown by platform, based on real-world results from properly executed full delete installs. The 6.7L Cummins produces up to 430 HP and 1,075 lb-ft in high-output trim^[3], giving significant headroom for tune gains after delete.

Platform	Stock HP / Torque	Typical Gain (Full Delete + Tune)	Key Benefit
Ram 6.7L Cummins (2013–2018)	385 hp / 850 lb-ft	+50–80 hp, +150–200 lb-ft	EGT reduction, cleaner intake
Ram 6.7L Cummins (2019–2021)	400 hp / 1,000 lb-ft	+60–90 hp	DPF backpressure eliminated
Ford 6.7L Powerstroke (2017–2019)	450 hp / 935 lb-ft	+40–60 hp	Regen cycle elimination, throttle response
Ford 6.4L Powerstroke (2008–2010)	350 hp / 650 lb-ft	+50–70 hp	DPF and EGR removal, reliability boost
Duramax LML (2011–2016)	397 hp / 765 lb-ft	+60–100 hp	DPF delete, SCR delete, EGR removal
Duramax L5P (2017–2023)	445 hp / 910 lb-ft	+50–80 hp	Full emissions delete, performance tuning

The 6.4L Powerstroke deserves a special mention because it's one of the platforms that benefits most dramatically from a full delete — not just in power, but in reliability. The factory DPF system on the 6.4L is notorious for cooking fuel economy and accelerating engine wear through active regeneration cycles that dump raw fuel into the cylinder to burn off soot. Getting that system out of the equation extends engine life and frees up real power.

The install experience varies a lot by platform, but here's what a realistic timeline looks like for the most common builds:

• EGR delete kit installation: 1.5–3 hours depending on coolant line routing and access. Cummins installs tend to be more accessible than Powerstroke. Expect to drain coolant — budget for a fresh fill with quality extended-life coolant.
• DPF delete pipe swap: 45 minutes to 2 hours. Bolt-off DPF and CAT section, bolt on the delete pipe. Most platforms are straightforward; Cab & Chassis builds require an extension pipe upgrade due to different frame length.
• Tuner flash: 20–45 minutes for OBD-II handheld flash. Bench flash service takes 3–5 business days for mail-in, but is the recommended route for 2020+ platforms and EcoDiesel applications.

Post-install, you should see zero emission-related DTCs. If codes are present after a quality tune install, the most common cause is a residual sensor reading from an upstream O2 or NOx sensor that wasn't accounted for in the tune parameters. A good tune support team resolves this with a tune revision — typically within 24–48 hours via email or phone support.

Fuel economy typically improves noticeably once the regen cycle is eliminated. DPF regen cycles increase fuel consumption by an average of 13% in controlled studies^[4]. Users across the Cummins and Powerstroke platforms commonly report 1.5–3 MPG improvements under mixed driving conditions after a full delete compared to a stock, regen-burdened tune.

Here's the thing — the goal of this whole article has been to give you the framework to evaluate any delete kit honestly. And when you run that framework against what The Diesel Dudes offers, the results hold up.

Every full delete bundle at The Diesel Dudes is built around the same three-component structure: a reliable tuner platform (EFI Live, EZ Lynk, aftermarket tuner), a physical EGR delete kit with quality block-off hardware, and a properly fitment-matched DPF delete pipe or 5" full exhaust system. Year ranges are specific. Engine codes are called out explicitly. And support is available after the sale — not just during checkout.

The technical team here has seen the full spectrum of what happens when these systems get done right versus done cheap. The difference shows up in EGT numbers under tow loads, in intake manifold condition at 100,000 miles, and in whether your tune handles a cold start at -10°F without throwing a code.

If your truck is a workhorse — hauling, towing, off-road, or all three — a properly executed full delete from a source that stands behind its products is the move. The Diesel Dudes full delete bundles are available for 2007–2024 Ram Cummins, 2008–2026 Ford Powerstroke, and 2007.5–2023 Duramax applications.

The diesel community has been working through this for years — and the consistent takeaway is that the guys who spent time researching before buying never regret it, and the guys who bought the cheapest option often end up buying twice.

A proper full delete bundle eliminates DPF backpressure, removes the EGR carbon loop from your intake, kills the DEF and SCR systems that clog and fail, and frees your tune to run the engine the way it was designed to run under real load. Done right, you're looking at meaningful power and fuel economy gains, dramatically reduced maintenance intervals on intake and cooling components, and a truck that runs strong for the long haul.

The Diesel Dudes has full delete bundles dialed in for every major platform. Whether you're running a 2013–2018 Ram 6.7L Cummins, a 2017–2019 Ford 6.7L Powerstroke, or a Duramax L5P, the kit is spec'd for your exact truck — not a "close enough" universal fit.

Thanks for reading! As always, if you have any questions feel free to shoot us a message!

Legal Notice: Removing or tampering with emissions equipment may violate the federal Clean Air Act and state emissions regulations. EPA penalties reach up to $45,268 per event for manufacturers or $4,527 for individuals^[5]. Check your local and state laws before modifying emissions equipment on any vehicle driven on public roads.Disclosure: The Diesel Dudes sells some of the products mentioned in this article. Our recommendations are based on hands-on testing and customer feedback.