Skip to content
6.7 Cummins Tuner with Deletes: Complete Guide to Performance & Risks
September 28, 2025

6.7 Cummins Tuner with Deletes: Complete Guide to Performance & Risks

Considering a 6.7 Cummins tuner with deletes? This powerful combination can unlock significant performance gains but comes with important considerations. This guide covers the pros, cons, legal implications, and top product recommendations for 6.7 Cummins delete kits with tuners. Whether you're seeking better fuel economy, increased horsepower, or improved reliability, understand everything before modifying your diesel truck.

What is a 6.7 Cummins Tuner with Deletes?

A 6.7 Cummins tuner with deletes typically includes:

  • Performance tuner/programmer that recalibrates engine parameters
  • EGR delete kit that removes the exhaust gas recirculation system
  • DPF delete pipe that replaces the diesel particulate filter
  • Optional DEF system delete for complete emissions removal

This combination allows your 6.7 Cummins to operate without emissions restrictions, potentially increasing horsepower by 100-200+ and improving fuel economy by 3-5 MPG.

Pros of 6.7 Cummins Delete Kit with Tuner

1. Significant Performance Gains

  • Horsepower increase: 100-200+ HP depending on tuning level
  • Torque improvement: 200-400+ lb-ft additional torque
  • Faster turbo spool: Reduced backpressure improves throttle response

2. Improved Fuel Economy

  • MPG gains: 3-5+ MPG improvement reported by most users
  • Reduced regeneration cycles: Eliminates DPF regeneration fuel consumption

3. Enhanced Reliability

  • Prevents common issues: Eliminates EGR cooler failures and DPF clogging
  • Reduced engine temperatures: Lower EGTs (exhaust gas temperatures)
  • Extended engine life: Reduces carbon buildup and soot contamination

4. Maintenance Cost Reduction

  • Eliminates expensive repairs: No DPF replacements ($3,000-$5,000+)
  • Reduces fluid costs: No DEF fluid required
  • Simplifies maintenance: Fewer components to maintain or replace

Cons and Risks of 6.7 Cummins Tuner with Deletes

1. Legal Compliance Issues

  • EPA violations: Illegal for on-road use in all 50 states
  • Significant fines: Up to $4,500+ per violation for tampering
  • State enforcement: Failed inspections and registration issues

2. Warranty Implications

  • Voided powertrain warranty: Most dealerships deny claims for modified trucks
  • Detection methods: Dealers can detect tuning even after returning to stock

3. Resale Value Impact

  • Reduced marketability: Many buyers avoid deleted trucks
  • Legal concerns: New owners assume liability for emissions non-compliance

4. Potential Engine Risks

  • Component stress: Increased power can strain transmission and drivetrain
  • Poor tuning quality: Low-quality tunes can cause engine damage

Best 6.7 Cummins Tuner with Deletes Options

When choosing a complete delete and tune package, quality and compatibility are paramount. Investing in a reputable kit from a trusted supplier like Seguler ensures you get the performance you paid for without the headaches of missing hardware or unreliable tuning.

1. 2019-2021 Ram 6.7L Cummins 4"/5" DPF/EGR/DEF Delete All-in-one kit

This premium package is the ultimate solution for late-model Ram owners looking to completely unlock their truck's potential. Engineered for simplicity and massive gains, this all-in-one kit includes everything you need for a seamless transformation.

2019-2021 Ram 6.7L Cummins Complete DPF EGR DEF Delete Kit with Tuner - All-in-One Performance Kit for Off-Road Use

Why Our Customers Choose This Kit:

  • Unmatched Power Gains: Experience a jaw-dropping +200 HP and +400 lb-ft torque with the included pre-loaded tuning options, specifically calibrated for this hardware.
  • True All-In-One Convenience: Forget piecing together parts from different vendors. This kit includes the high-flow exhaust (your choice of 4" or 5"), EGR delete, DPF delete pipe, and DEF system delete—all designed to work perfectly together.
  • Perfect Fitment: Specifically designed for 2019-2021 Rams, ensuring every bracket and pipe bolts up like factory, saving you hours of installation frustration.
  • Ideal For: Owners of 2019-2021 Ram 3500/2500 trucks who want the most complete, powerful, and hassle-free delete solution on the market.

2. 2007.5-2009 6.7L Ram Cummins 4“ DPF/DEF/EGR Delete All-in-One Kit

Revitalize your classic 6.7L Cummins with this comprehensive package designed to eliminate the most common failure points of the early emissions systems. This kit isn't just an upgrade—it's a new lease on life for your truck.

2007.5-2009 6.7L Dodge Ram Cummins 4-inch DPF DEF EGR Delete Kit - Fixes Common EGR Cooler Failures & Restores MPG

Why This Kit is a Game Changer for Early Models:

  • Solve Legendary Problems: Specifically targets and eliminates the failure-prone EGR coolers and clogging DPFs that plague the 2007.5-2009 model years, dramatically improving reliability.
  • Restore Lost Performance: Reclaim the horsepower and throttle response that was stolen by emissions equipment. Expect smoother operation, quicker spooling, and significant MPG improvements.
  • Complete Kit, No Guesswork: Includes a robust 4" turbo-back exhaust, full EGR delete, DPF/DEF delete, and a tuner with proven, powertrain-safe calibrations that wake up the engine without compromising safety.
  • Enhanced Driveability: Say goodbye to excessive regens and reduced power modes. Enjoy a cleaner-running engine and the confidence to tow without fear of derates.
  • Ideal For: Owners of 2007.5-2009 Dodge/Ram trucks seeking to dramatically improve reliability, fuel economy, and day-to-day driveability by solving known emissions system issues.

Ready to Transform Your Truck?

Browse Our Full Collection of Cummins Delete & Tune Packages at Seguler

Final Verdict: Is a 6.7 Cummins Tuner with Deletes Right for You?

A 6.7 Cummins tuner with deletes offers impressive performance benefits but comes with significant legal and practical considerations. For off-road and competition use, it can transform your truck's capabilities. For daily driving, weigh the benefits against the legal risks and potential costs.

FAQs About 6.7 Cummins Tuner with Deletes

Q1: What is the best tuner for 6.7 Cummins with deletes?

A1: The EZ Lynk AutoAgent and PPEI Custom Tuning are top choices. EZ Lynk offers wireless connectivity and pre-loaded tunes, while PPEI provides custom tuning tailored to specific modifications. Both platforms deliver reliable performance gains while maintaining engine safety.

Q2: Can dealers detect deleted tuning?

A2: Yes, most dealers can detect tuning through ECU flash counters and lack of emissions system activity, even after returning to stock. This may void your powertrain warranty if related components fail.

Q3: How much power gain can I expect?

A3: Most systems gain 100-200+ horsepower and 200-400+ lb-ft torque, depending on tuning level. Performance tunes provide solid gains for towing, while race tunes require supporting mods for maximum power.

Q4: Will deleting improve fuel economy?

A4: Yes, most users report 3-5 MPG improvement from eliminating DPF regeneration cycles and optimized tuning. Reduced backpressure and more efficient combustion contribute to better fuel efficiency.

Q5: What are the legal penalties?

A5: Federal fines can exceed $4,500 per violation for emissions tampering. States may impose additional penalties including failed inspections, registration blocks, and on-road fines. Enforcement is increasing nationwide.

Q6: What maintenance changes are needed after deleting?

A6: Plan for more frequent 5,000-mile oil changes, upgrade to high-flow fuel filters, and monitor transmission and EGT temperatures closely. Consider a built transmission for higher horsepower applications.

Q7: How long does installation take?

A7: Professional installation typically takes 4-8 hours for complete delete and tuning. DIY installations may take longer and require mechanical experience and proper tools.

Next article Diesel Particulate Filter Problems: 5 Warning Signs You Can't Ignore

Leave a comment

* Required fields

Featured collection

  • Seguler 1986-1995 Ford F150 F250 F350 Mustang Trucks EGR Simulator Eliminator / Block Off Plate Kit

    SEGULER
    $78.58 - $78.58
    $78.58
    $78.58 - $78.58
    $78.58

    Block Off Plate Material: Aluminum alloy. Easy installation,and convenient to use. Made of CNC milled from aircraft grade Billet aluminum. Will N...

    View full details
    $78.58 - $78.58
    $78.58
    $78.58 - $78.58
    $78.58

  • For 1996-2004 3.8L 4.6L 5.4L Ford GT SVT GT500 V8 Mustang Cobra EGR Delete kit And Exhaust Cap

    SEGULER
    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99

    Placement on Vehicle:Front Billet aluminum IAC (idle air control) and EGR (exhaust gas recirculation) block-off plates add a distinctive touch to ...

    View full details
    $51.99 - $51.99
    $51.99
    $51.99 - $51.99
    $51.99

  • Seguler 2009-2019 6.7L Ram Cummins Coolant Bypass Barb Adapter Leak Repair Kit

    SEGULER
    $35.99 - $35.99
    $35.99
    $35.99 - $35.99
    $35.99

    Made of aerospace-grade billet aluminum. Effectively repair the problem of coolant leakage. Resist corrosion and rust for a long time and has good...

    View full details
    $35.99 - $35.99
    $35.99
    $35.99 - $35.99
    $35.99

  • For 2004-2005 6.6L Chevy GMC Silverado LLY Duramax Diesel EGR Delete Kit

    SEGULER
    $92.99 - $92.99
    $92.99
    $92.99 - $92.99
    $92.99

    Material: Aluminum,Stainless steel,Silicone Eliminates soot build-up and clogged EGR Valves Direct replacement. No installation instruction. No Gl...

    View full details
    $92.99 - $92.99
    $92.99
    $92.99 - $92.99
    $92.99

  • For 2011-2016 6.6L GMC Chevy Duramax Diesel LML EGR Valve Cooler Delete Kit

    SEGULER
    $66.49 - $66.49
    $66.49
    $66.49 - $66.49
    $66.49

    Material: Stainless steel, billet aluminum. Eliminate soot and block of EGR valve prevent high EGT from flow back into engine. Quicker turbo spoo...

    View full details
    $66.49 - $66.49
    $66.49
    $66.49 - $66.49
    $66.49

  • For 2011-2019 6.7L Ford Powerstroke Diesel EGR Delete Kit

    SEGULER
    $109.99 - $109.99
    $109.99
    $109.99 - $109.99
    $109.99

    Material: Aluminum alloy,Stainless steel. Exhaust cover plates for EGT probes in Ford factories. CNC machine of billet aluminum and stainless stee...

    View full details
    $109.99 - $109.99
    $109.99
    $109.99 - $109.99
    $109.99

  • For 2006-2007 6.6L Chevrolet Silverado Classic GMC Duramax LBZ Diesel EGR Valve Cooler Delete Kit

    SEGULER
    $63.49 - $63.49
    $63.49
    $63.49 - $63.49
    $63.49

    Material: Aluminum,Stainless steel,Silicone Eliminates soot build-up and clogged EGR Valves Guaranteed to last under high temperatures and pressu...

    View full details
    $63.49 - $63.49
    $63.49
    $63.49 - $63.49
    $63.49

  • For 2010-Present Stage 2 ISX 15 CM2250 CM2350 EGR Delete Kit

    SEGULER
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

    Material: Aluminum Two plates in this kit are made of 6061 aircraft grade billet aluminum anodized and CNC laser cut or CNC machined out of high q...

    View full details
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

  • For 2011-2023 6.7L Ford Powerstroke Diesel EGR Delete Kit

    SEGULER
    $85.99 - $85.99
    $85.99
    $85.99 - $85.99
    $85.99

    Material: Aluminum alloy,Stainless steel. CNC machine of billet aluminum and stainless steel more durable. Exhaust cover plates for EGT probes in ...

    View full details
    $85.99 - $85.99
    $85.99
    $85.99 - $85.99
    $85.99

  • For 2014-2019 3.0L Dodge Ram 1500 EcoDiesel EGR Valve & Cooler Delete Kit

    SEGULER
    $72.99 - $72.99
    $72.99
    $72.99 - $72.99
    $72.99

    Material: Aluminum,Stainless steel,Silicone. Eliminates soot build-up and clogged EGR Valves. EGR removed and the temperature in the engine compa...

    View full details
    $72.99 - $72.99
    $72.99
    $72.99 - $72.99
    $72.99

  • Seguler 2003-2007 6.0L FORD Powerstroke Diesel EGR Cooler Delete Kit

    SEGULER
    $56.14 - $56.14
    $56.14
    $56.14 - $56.14
    $56.14

    Material: 304 stainless steel,Aluminum billet. Eliminate ash accumulation and EGR valve blockage. Improve the cooling effect and reduce the engi...

    View full details
    $56.14 - $56.14
    $56.14
    $56.14 - $56.14
    $56.14

  • Seguler 2003-2007 6.0L Ford F250 F350 Powerstroke Diesel EGR Basic Cooler Kit

    SEGULER
    $79.99 - $79.99
    $79.99
    $79.99 - $79.99
    $79.99

    CNC machine of Aluminum and Stainless Steel billets. Resist corrosion and rust for a long time and has good heat dissipation. Reduce component a...

    View full details
    $79.99 - $79.99
    $79.99
    $79.99 - $79.99
    $79.99

  • For 1983-1997 Ford F150 F250 F350 Mustang Trucks EGR Delete Block Off Plate Kit

    SEGULER
    $22.87 - $22.87
    $22.87
    $22.87 - $22.87
    $22.87

    Material: Aluminum alloy. Easy installation,and convenient to use. Made of CNC milled from aircraft grade Billet aluminum. Will Not Warp or Deform...

    View full details
    $22.87 - $22.87
    $22.87
    $22.87 - $22.87
    $22.87

  • Seguler 2011-2016 6.6L GMC Chevy Duramax Diesel LML Up-Pipe & EGR Valve Cooler Delete Kit

    SEGULER
    $163.86 - $163.86
    $163.86
    $163.86 - $163.86
    $163.86

    Material: 304 Stainless Steel. Reduce the amount of carbon deposited from exhaust to intake. Thanks to its fast airflow and superior engineered ex...

    View full details
    $163.86 - $163.86
    $163.86
    $163.86 - $163.86
    $163.86

  • For 2011-2023 6.7L Ford F250 F350 F450 F550 Powerstroke Diesel EGR Valve Delete Cooler Delete Kit

    SEGULER
    $55.99 - $55.99
    $55.99
    $55.99 - $55.99
    $55.99

    Material: Aluminum alloy,Stainless steel. Black Anodized components for better durability. Exhaust Cover Plate Tapped for Ford Factory EGT Prob...

    View full details
    $55.99 - $55.99
    $55.99
    $55.99 - $55.99
    $55.99

  • For 2017-2023 6.6L Chevy GMC Duramax L5P diesel EGR Valve Cooler Delete kit

    SEGULER
    $131.99 - $131.99
    $131.99
    $131.99 - $131.99
    $131.99

    Material:Aluminum Alloy ,Stainless steel,Silica gel Improved Performance: Eliminating the EGR system leads to better exhaust flow and faster tur...

    View full details
    $131.99 - $131.99
    $131.99
    $131.99 - $131.99
    $131.99

  • Seguler 2010-2024 6.7L Dodge Ram Cummins Diesel EGR Valve Cooler Delete Kit

    SEGULER
    $89.99 - $89.99
    $89.99
    $89.99 - $89.99
    $89.99

    Material: Aluminum alloy,silicone This kit is intended for off road use. Eliminates soot build up and clogged EGR Valves. Hot exhaust gasses ar...

    View full details
    $89.99 - $89.99
    $89.99
    $89.99 - $89.99
    $89.99

  • For 11-23 Ford 6.7L Powerstroke CCV/PCV Reroute/Delete Engine Ventilation Kit

    SEGULER
    $72.00 - $72.00
    $72.00
    $72.00 - $72.00
    $72.00

    Material:Aluminum alloy rubber. Black Anodized components for better durability. This Crankcase Ventilation System provides a SOLID solution to ...

    View full details
    $72.00 - $72.00
    $72.00
    $72.00 - $72.00
    $72.00

  • For 2007-2010 Cummins ISX CM871 EGR Plug Kit Stage 2 Plates and Plugs Aluminum

    SEGULER
    $67.99 - $67.99
    $67.99
    $67.99 - $67.99
    $67.99

    Material:304 Stainless Steel & Billet Aluminum. High-temperature graphite gaskets are adopted to prevent leakage. Used to delete the EGR val...

    View full details
    $67.99 - $67.99
    $67.99
    $67.99 - $67.99
    $67.99

  • Seguler 2017-2019 L5P Duramax Diesel 4pcs L5P Can Bus Plugs Connector Replacement

    SEGULER
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

    Material: ABS For use with an Aftermarket Exhaust System. A new engine calibration is required. Plugs will replace NOX and DEF modules. The L...

    View full details
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

  • For 2007-2010 6.6L Chevy GMC LMM Duramax EGR Valve Cooler Delete Kit Fit

    SEGULER
    $61.99 - $61.99
    $61.99
    $61.99 - $61.99
    $61.99

    Material: Aluminum alloy,Stainless steel. Improves engine life by eliminating soot build-up and reducing fuel consumption. EGR valve cooler delet...

    View full details
    $61.99 - $61.99
    $61.99
    $61.99 - $61.99
    $61.99

  • Seguler 3" Ecodiesel DPF Delete Pipe & EGR Delete kit for 2014-2018 3.0L Ram

    SEGULER
    $342.00 - $342.00
    $342.00
    $342.00 - $342.00
    $342.00

    Material: High quality stainless steel Inlet Diameter: 3.0" Eliminates soot build-up and clogged EGR Valves Specialized designs to ensure a perfec...

    View full details
    $342.00 - $342.00
    $342.00
    $342.00 - $342.00
    $342.00

  • Seguler 2020-2023 chevy duramax L5P Diesel Can Bus Plugs Connector

    SEGULER
    $69.99 - $69.99
    $69.99
    $69.99 - $69.99
    $69.99

    For use with aftermarket exhaust systems or delete pipes Used when removing the DPF/DEF systems These plugs will go in place of the NOx and DEF mo...

    View full details
    $69.99 - $69.99
    $69.99
    $69.99 - $69.99
    $69.99

  • For 1986-1995 2.8L 4.9L 5.0L 5.8L 7.5L Ford F150 F250 Bronco EGR Simulator Eliminator Delete/EGR Delete

    SEGULER
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

    isconnect your stock EGR valve and breathe life into your motor, while keeping your check engine light off, but active for future problems! This ...

    View full details
    $59.99 - $59.99
    $59.99
    $59.99 - $59.99
    $59.99

  • For 2013-2023 6.7L Dodge Ram Cummins Cab & Chassis EGR Delete Kit Diesel

    SEGULER
    $62.99 - $62.99
    $62.99
    $62.99 - $62.99
    $62.99

    Material: Aluminum alloy. Eliminates soot build up and clogged EGR Valves. Hot exhaust gasses are not being re-routed back into the motor. Coo...

    View full details
    $62.99 - $62.99
    $62.99
    $62.99 - $62.99
    $62.99