4“ Ram Cummins 6.7L Down-pipe Back Competition Exhaust (2013-2018)

DPF & Catalytic Converter Delete Pipe – 2013-2018 RAM 2500/3500

This off-road-only exhaust pipe is designed to remove the restrictive factory catalytic converter (CAT) and diesel particulate filter (DPF), improving exhaust flow, turbo response, and overall performance. It’s a direct bolt-on replacement for the stock downpipe, making installation simple with no welding required.

Key Features:

✔ Full DPF & CAT Delete – Eliminates factory emissions components for better airflow and reduced exhaust gas temperatures (EGTs).
✔ Direct OEM Fitment – Uses factory hangers and connections for a seamless install.
✔ Complete Kit – Includes all necessary hardware (gaskets, clamps, bolts).
✔ Mandrel-Bent Construction – High-quality piping for smooth exhaust flow.
✔ Fits All Configurations – Works with stock or aftermarket exhaust systems.

Important Notes:

⚠ LEGAL WARNING:

• NOT STREET-LEGAL in the U.S., Canada, and most countries (violates EPA/CARB emissions laws).

• Fines up to $10,000+ possible if caught driving with deleted emissions equipment.

• Will not pass emissions inspections (where required).

⚠ Tuning Required:

• A custom ECU tune is mandatory to prevent engine fault codes, limp mode, and DPF-related issues.

• Recommended tuners: EZ Lynk, PPEI, EFI Live (with off-road tuning options).

⚠ Warranty & Reliability Risks:

• Voids powertrain warranty (if still active).

• May trigger permanent fault codes if not properly tuned.

Who Should Buy This?

🔹 Off-road & competition use only (racing, farm trucks, private land).
🔹 Performance builds (paired with a full turbo-back exhaust and tune).
🔹 Diesel enthusiasts looking for better throttle response and fuel economy (after tuning).

Recommended Upgrades:

• Full turbo-back exhaust (4″ or 5″ systems from CrevoC).

• EGR delete kit (for complete emissions removal).

• Custom tuning (to optimize performance and disable DPF/DEF systems).

Final Verdict:

This is a high-quality delete pipe for serious diesel performance, but ONLY for off-road/competition use. If you need a street-legal alternative, consider a high-flow catalytic converter or DPF-back exhaust system instead.

Would you like specific brand recommendations for tuners or full exhaust setups?