Dodge Ram 6.7L Diesel Truck Delete Kit

A delete kit is a collection of aftermarket parts that remove or bypass factory emissions systems on a 6.7L Cummins diesel engine. Common deletions include the EGR (Exhaust Gas Recirculation) system, DPF (Diesel Particulate Filter), and CCV (Crankcase Ventilation) system. These kits aim to improve reliability, increase power, and reduce maintenance costs associated with emission components.

Yes. Removing restrictive emissions components reduces exhaust backpressure and intake air temperatures, allowing the turbo to spool faster and the engine to breathe more efficiently. Typical gains include 30–80 horsepower, 60–150 lb‑ft of torque, and improved throttle response, especially when combined with a tune.

No. Deleting emissions systems on a diesel truck used on public roads violates the U.S. Clean Air Act and is illegal in all 50 states. Delete kits are sold for off‑road, competition, or agricultural use only. Fines for non‑compliance can be substantial, and your vehicle may fail state inspections.

An EGR delete kit blocks exhaust gases from being recirculated into the intake manifold. This prevents soot and carbon buildup in the intake, reduces engine temperatures, and eliminates common failure points like cracked EGR coolers and leaking throttle valves.

A DPF delete pipe replaces the factory diesel particulate filter, which traps soot and requires periodic regeneration. Removing the DPF eliminates exhaust backpressure, prevents clogging, and stops the need for costly regenerations or filter replacements.

Yes. Removing the EGR or DPF will trigger check‑engine lights and cause the engine to run in a reduced‑power “limp mode.” A custom tuner (like EZ Lynk, H&S, or PPEI) is required to disable the emission‑related fault codes and recalibrate the ECU for optimal performance.

• Full delete: Removes EGR, DPF, and DEF (diesel exhaust fluid) systems entirely. Requires a comprehensive tuner and exhaust modifications.
• Partial delete: May only delete the EGR while retaining the DPF, or use a “race pipe” that bypasses the DPF but keeps the factory sensors intact for inspection purposes.

Installation complexity varies. EGR deletes are relatively straightforward bolt‑on jobs. DPF delete pipes may require cutting and welding the exhaust. CCV reroutes are simple. If you're comfortable with basic mechanics and have the right tools, DIY is possible. For complex deletions or tuning, professional installation is recommended.

Yes, positively. Most users report a 1–3 MPG improvement after deleting, especially in highway driving. The reduced backpressure and cleaner intake allow the engine to operate more efficiently. However, aggressive tuning and heavy‑footed driving can negate these gains.

• Legal risk: Fines and inability to pass emissions inspections.
• Warranty void: Any deletion will void the factory powertrain warranty.
• Resale impact: Some buyers avoid deleted trucks due to legal concerns.
• Poor installation: Incorrectly installed parts can cause exhaust leaks, boost leaks, or engine damage.