Seguler 5" DP-Back & CCV Reroute EGR Delete Kit for 2011-2022 6.7L Powerstroke
Product Overview
Key Features
Q: Does adding a muffler reduce the performance benefits of a 5" exhaust?
A: No. The high-flow muffler included in this system is engineered to maintain the same core flow characteristics as a straight 5" pipe while attenuating specific resonant frequencies that cause cabin drone. Exhaust gas velocity and volume are preserved — the muffler shapes the sound, not the performance.
Q: How should I decide between a 4-inch and 5-inch exhaust diameter for my 6.7L?
A: A 4-inch exhaust provides a well-balanced combination of improved airflow, towing-friendly acoustics, and everyday driving comfort. A 5-inch system offers maximum flow capacity and a deeper, more assertive exhaust note, making it the better match for trucks running elevated power calibrations or owners who want the largest available exhaust upgrade. This 5" kit includes a high-flow muffler to keep the sound refined for daily driving.
Q: How does the CCV reroute protect the turbocharger and intercooler over the long term?
A: On the factory 6.7L, the CCV system routes crankcase oil vapor directly into the turbocharger compressor inlet. This oil mist condenses on the compressor wheel, intercooler tubes, and intake surfaces, gradually building residue that restricts airflow and can contribute to turbocharger coking. The reroute kit redirects this vapor stream away from the turbo entirely, helping those components stay cleaner and breathe more freely over tens of thousands of miles.
Q: What advantages does the muffled 5" system offer for trucks that tow frequently?
A: Towing places the engine under sustained load for extended periods, which amplifies exhaust resonance inside the cabin. The high-flow muffler in this kit specifically targets the low-frequency drone that becomes fatiguing during long highway towing sessions, allowing drivers to benefit from 5" airflow headroom without the constant cabin hum that unmuffled large-diameter systems can produce under load.