Best EGR Delete Kit for 6.7 Cummins: Top Picks & Buyer's Guide

Here's the thing — the EGR system exists to reduce NOx emissions at the cost of your engine's health. It pumps dirty, hot exhaust back into your intake air charge, dropping combustion temps just enough to satisfy emissions targets. But over time, that exhaust deposits soot on your intake manifold, clogs your EGR cooler, and introduces combustion gases into your coolant circuit.

On the 6.7L Cummins specifically, a cracked or clogged EGR cooler is one of the most common failure points on 2010–2018 models. The fix isn't just cleaning it — it's removing the system entirely and blocking off the ports with precision-machined block-off plates.

• Intake temps drop 100–200°F — cooler, denser air means better combustion
• No more soot buildup on intake valves or manifold
• EGR cooler failure risk goes to zero — because the cooler is gone
• Turbo longevity improves — lower Exhaust Gas Temperatures (EGTs) reduce heat soak on the VGT (Variable Geometry Turbocharger)

Pair the delete with proper tuning and you're looking at 20–40 HP gains^[3] and 1–2 MPG improvements^[3] from cleaner, more efficient combustion alone.

Year-range specificity isn't optional here — it's everything. Running the wrong kit means coolant leaks, misfitting plates, and codes that won't clear no matter how good your tune is.

The 2013–2018 platform is the most common and has the widest aftermarket support. If you're on a 2019+, verify your tuner is ECM-compatible before ordering hardware.

Let's break down the top-tier options. Not all EGR kits are equal — the difference between a $150 block-off plate and a full delete bundle is the difference between stopping one symptom and solving the whole problem.

1. Full Delete Bundle + EZ Lynk Auto Agent 3 (Best Overall)
This is the setup RamForum members consistently land on after trying partial kits. The EZ Lynk comes preloaded with delete calibrations, offers selectable power levels (street, tow, race), and supports wireless tune updates. Power gains: 30–100 HP depending on fuel and injector condition. Price range: $1,500–$2,500 complete.

2. EFI Live AutoCal V3 + EGR Block-Off (Best for Cab-Chassis)
EFI Live gives professional-grade custom calibrations. Best suited for 2013–2024 trucks doing serious towing or cab-chassis work. Gains of 40+ HP with superior throttle response. Requires a tuner who knows the platform — not a plug-and-play solution. Price: $2,000+.

3. EGR Block-Off Only (Budget Entry)
On 2007.5–2009 trucks, a basic block-off plate stops soot immediately. Gains are modest — 20–30 HP — and you still need a separate tuner to clear codes. Best as a first step, not a final build. Under $200.

Here's why partial kits leave money on the table. The EGR, DPF, and DEF systems are interdependent. Remove just the EGR and your DPF still creates exhaust backpressure that limits turbo spool and kills low-end torque. Your truck still runs regen cycles that dump raw fuel into the exhaust to burn off soot — a process that dilutes engine oil and spikes EGTs.

A full delete bundle removes all three systems simultaneously and gives your tuner a clean slate to optimize fueling, timing, and boost targets without emissions hardware fighting the calibration.

• EGR delete alone: Stops soot intake, reduces coolant risk. Gains: 15–25 HP.
• EGR + DPF delete: Eliminates backpressure, improves turbo spool. Gains: 30–50 HP.
• Full bundle (EGR + DPF + DEF + tuner): Complete system optimization. Gains: 40–100 HP, 1–2 MPG, zero regen cycles.

According to RamForum thread discussions , the overwhelming consensus is that owners who start with EGR-only kits end up buying the full bundle within 6–12 months anyway. Save yourself the second install — go full delete from the start.

The install sequence matters — skip steps and you'll be chasing coolant leaks or DTCs (Diagnostic Trouble Codes) for days. Follow this order exactly:

1. Install your delete tuner first. Flash the tune before touching any hardware. Unplug the air intake throttle valve before starting the flash. Keep a battery charger connected throughout.
2. Drain the coolant. The EGR cooler is coolant-fed. Drain the system before breaking any fittings or you'll make a mess and risk air pockets.
3. Remove heat shields on the EGR hot-side pipe and cooler assembly.
4. Loosen EGR pipe clamps and disconnect the crossover pipe. Use PB Blaster on any stubborn bolts — these see serious heat cycles.
5. Install block-off plates with new gaskets. Torque to 25–30 ft-lbs.
6. Reroute and cap coolant lines per your kit's instructions. Do not leave lines open.
7. Install your DPF delete pipe before driving the truck.
8. Test for leaks at operating temp before putting any load on the engine.

Per RamForum user reports , incomplete coolant bypasses are the number-one cause of post-install overheating. Double-check every cap and fitting.

No EGR delete works without tuning. The ECU needs to be reprogrammed to ignore the missing emissions sensors — otherwise you're driving around in limp mode with a dashboard that looks like a Christmas tree.

EZ Lynk Auto Agent 3 is the forum favorite for good reason. It's wireless, supports over-the-air tune updates, and comes preloaded with calibrations specifically written for delete builds. Selectable tune levels mean you can run a mild street tune Monday through Friday and flip to a high-power tow tune when you're hauling. Compatible with 2007.5–2021 6.7L Cummins.

EFI Live AutoCal V3 targets the 2001–2021 platform and is the tool of choice when a professional tuner is building custom maps around your injectors, turbo, and boost targets. It delivers superior MPG optimization and the cleanest throttle response of any platform available — but you need a skilled calibrator behind it.

RaceMe Ultra is a plug-and-play option that works well on 2013–2018 trucks and integrates EGT monitoring. Solid mid-range choice if you want simplicity over tunability.

The Diesel Dudes Technical Team recommends EZ Lynk for the vast majority of daily-driven and tow-use builds.

Real-world feedback from 6.7 Cummins owners tells a consistent story. According to RamForum discussions , users who ran full EGR and DPF delete bundles with EZ Lynk tuning reported zero limp-mode events after install, with intake temps measurably lower and throttle response described as "night and day" compared to stock.

The pattern from forum threads is clear: owners who invested in complete delete bundles upfront report significantly better outcomes than those who started with budget block-off plates and a basic tune. Common post-install results include:

• Regen cycles eliminated entirely — no more fuel dilution in the oil
• EGTs running 150–200°F cooler under load
• Fuel economy gains of 1–2 MPG on highway runs
• 30–50 HP improvement on conservative tunes; 80–100 HP on performance-focused calibrations
• Maintenance intervals extended — no DPF cleaning, no DEF fluid costs averaging $800–1,200/year

The most frequent regret across threads: starting with an EGR-only kit to save money, then having to pull everything apart again 6 months later for the full bundle. Do it right the first time.

Let's talk real numbers. Here's what a properly built 6.7 Cummins delete costs across the major tiers:

Factor in annual DEF savings of $800–$1,200 and eliminated DPF cleaning costs of $300–$600 per service.^[3] Most owners recoup the cost of a full delete bundle within 18–24 months on fuel and maintenance savings alone. The math on a full bundle is hard to argue with.