FITMENT
- 2013–2018 6.7L Dodge Ram Cummins 2500 & 3500 Pickup Turbo Diesel.
- This kit is designed for standard leaf-spring pickup truck configurations.
- Does NOT fit trucks equipped with the factory-optional Rear Air Suspension or commercial Cab & Chassis (4500/5500) models.
DESCRIPTION
Product Overview
- Heavy exhaust backpressure and ongoing carbon contamination severely limit the true power and efficiency of 6.7L Cummins trucks. Restrictive stock exhaust components hold back hot exhaust gases under the vehicle, while the factory EGR loop and throttle valve choke fresh incoming air with dirty soot and flow restrictions.
- This 6.7L Cummins Airflow Upgrade Package addresses every primary breathing restriction in a single comprehensive system. Featuring a free-flowing 5-inch turbo-back exhaust paired with precision EGR and throttle valve removal hardware, it eliminates intake-side carbon buildup, maximizes exhaust evacuation, and delivers the deep, resonant exhaust rumble your diesel engine was built for.
Key Features
- Replace the entire factory exhaust from the turbocharger outlet to the tailpipe with a 5-inch straight-through system for maximum CFM capacity and the deepest diesel tone.
- Remove the OEM EGR cooler and valve assembly to halt hot exhaust soot recirculation and eliminate internal coolant leak risks forever.
- Pull hot exhaust gases away from the turbocharger faster with the oversized 5-inch diameter, lowering towing EGTs and sharpening turbo response.
- Drop the restrictive factory throttle valve with a smooth straight-through tube that maximizes intake airflow efficiency.
- Rely on T-409 stainless steel construction that handles extreme exhaust heat cycles and road-splash corrosion far better than aluminized steel, preserving structural integrity for the life of the truck.
FAQ
Q: How loud will my truck be with this 5″ straight-pipe system?
A: Expect a significantly louder exhaust with a deep, aggressive diesel growl and very pronounced turbo whistle at idle and under load. If you tow heavy long-distance or prefer a quieter ride without drone, we strongly recommend adding an inline 5″ performance muffler.
Q: Will the throttle valve delete affect cold-weather starting?
A: No. Cold starts on the 6.7L Cummins are managed by the grid heater and fuel system, not the throttle valve. The factory throttle body primarily supports EGR operation, regeneration cycles, and engine shutdown smoothness.
Q: Do I need a separate exhaust tip for the 5″ tailpipe?
A: The system exits with a raw 5-inch stainless steel tailpipe. It’s functional as-is, but most owners bolt on an aftermarket 5″-to-7″ exhaust tip to protect the rear bumper from heat and give the truck a finished, aggressive look.
Q: Why is it important that the pipes are T-409 stainless steel instead of aluminized steel?
A: A 5-inch exhaust runs close to road splash, salt spray, and wheel debris. Aluminized steel rusts through quickly once the coating is scratched by rocks or road grit. T-409 stainless provides lifetime structural integrity and handles the extreme heat expansion of a turbo-back diesel system without warping or degrading.
