Full DEF Delete Kit w/ Mini Maxx V2 Tuner | Ram Cummins 6.7L | 2019-2021

2019-2021 RAM 6.7 Cummins DEF Delete Kit

The DEF delete kit for 6.7 Cummins 2019, 2020, 2021 is an All-in-One package designed for supported RAM 2500 and 3500 Pickup Trucks equipped with the 6.7L Cummins diesel engine. The bundle combines the Mini Maxx V2 Tuner, EGR valve and cooler removal hardware, and a choice of DPF Delete Pipe, 4-inch Exhaust System, or 5-inch Exhaust System.

This complete setup is designed to remove the factory DPF, DEF/SCR, and EGR emissions systems and match the mechanical changes with the required engine calibration. It eliminates regeneration for the removed particulate filter, opens the exhaust path, and provides a coordinated off-road solution instead of purchasing the tuner, pipe, and removal components separately.

Why Choose This Kit

• Preloaded Mini Maxx V2 Tuner - provides the required engine tuning without a separate cloud-based tuning device.
• Three exhaust choices - select a DPF Delete Pipe, 4-inch Exhaust System, or 5-inch Exhaust System.
• Optional muffler configuration - full exhaust options can be ordered with or without a muffler.
• Complete EGR removal hardware - includes the components required for EGR valve and cooler removal.
• 2019-2021-specific electronics support - the correct RAM tuner configuration uses the required communication setup for later-model trucks.

The DEF delete kit for 6.7 Cummins with Mini Maxx V2 Tuner is built around the 2019-2021 RAM platform rather than treating all 6.7 Cummins trucks as the same application.

Vehicle Compatibility

This product is intended for 2500 and 3500 pickups. Cab & Chassis trucks use different hardware and tuning requirements and should not be matched to this package solely by year and engine. Current Mini Maxx V2 documentation also confirms that 2018-2021 RAM applications require a bypass cable for tuner communication.

Kit Components

• Mini Maxx V2 Tuner - a preloaded OBD2 tuning and monitoring device used to program the truck for the modified emissions hardware. It also provides live data monitoring and DTC read/clear functions.
• Security Gateway Bypass Hardware - required on later RAM trucks so the Mini Maxx V2 can communicate correctly with the vehicle during programming. The correct 2018-2021 RAM tuner configuration includes the required bypass connection.
• DPF Delete Pipe - replaces the factory DPF/CAT aftertreatment section while retaining more of the original exhaust system.
• 4" Exhaust System - a larger complete exhaust option for customers who want increased flow while keeping a more moderate pipe diameter.
• 5" Exhaust System - the largest exhaust option offered with the package and intended for customers who prefer increased flow and a deeper exhaust note.
• Muffler Option - choose No Muffler for a louder exhaust or With Muffler to reduce sound and highway drone.
• EGR Valve & Cooler Delete Kit - removes the factory EGR valve and cooler and includes the related block-off, coolant-routing, and mounting hardware.
• Installation Hardware - includes the clamps and supporting parts supplied with the selected exhaust configuration.

The exact pipe and exhaust parts depend on the option selected at checkout. The three exhaust choices are alternatives; the package does not include all three.

Tuning & Performance

The DEF delete kit 6.7 Cummins 2019-2021 uses the Mini Maxx V2 to recalibrate the engine before the DPF, DEF/SCR, and EGR hardware is removed. The tuner modifies the emissions-related ECU strategies so the truck can operate with the selected hardware configuration without continuing to request regeneration of the removed DPF.

For 2019-2021 RAM applications, this product does not use the conventional multi-level SOTF configuration offered by some other Cummins tuning platforms. The current product configuration does not provide selectable horsepower stages as a checkout variation, so the kit should not be advertised with unverified HP claims.

Removing the restrictive aftertreatment section can improve exhaust flow and throttle response. Changes in boost, torque, fuel economy, MPG, and overall performance depend on engine condition, load, tire size, gearing, maintenance, exhaust choice, and driving style.

The Mini Maxx V2 calibration supports the emissions-removal setup but does not mean every unrelated engine diagnostic is disabled. It also should not be treated as support for an additional CCV delete unless that function is explicitly confirmed for the calibration.

Installation

Install the Mini Maxx V2 and successfully tune the truck before removing any factory emissions parts. Connect a stable battery charger, install the required Security Gateway bypass connection, connect the tuner, verify communication with the RAM, and complete the programming process before beginning mechanical removal.

After the tune has installed successfully, remove the factory DPF/DEF/SCR section and install the selected Delete Pipe or Exhaust System, then complete the EGR valve and cooler removal. Standard metric hand tools, exhaust tools, penetrating oil, coolant-handling tools, and safe access underneath the truck are normally required. An experienced DIY owner can complete the work, but programming faults, corrosion, or previous modifications may require professional assistance.

Ordering Information

When ordering the 2019-2021 6.7 Cummins DEF delete kit, select 2019-2021 as the vehicle fitment and then choose the desired exhaust configuration:

• DPF Delete Pipe
• 4" Exhaust System
• 5" Exhaust System

If a full Exhaust System is selected, choose No Muffler or With Muffler depending on the preferred sound level.

Verify that the truck is a RAM 2500 or 3500 Pickup with the 6.7L Cummins before purchase. Mini Maxx V2 compatibility also depends on the correct later-model communication setup, so the supplied bypass hardware should be installed exactly as instructed.

DEFdelete states that most orders ship the same or next business day, although components in a complete package may ship separately. Vehicle-specific programmed electronics and other configured products can have return restrictions once processing or programming begins.

This package is intended for lawful off road, racing, or competition applications. Check applicable emissions regulations before purchase and installation.