FITMENT
- 2011-2015.5 6.6L Silverado & Sierra Duramax 2500HD/3500HD LML engine with a V-Band Clamp.
- Does NOT Fit 2015.5-2016 models equipped with the 3-bolt flange. Please check underneath your truck!
- Please physically inspect underneath your truck to verify your turbo discharge style before purchasing!
DESCRIPTION
Product Overview
- The factory emissions system on 6.6L Duramax LML engines can create multiple airflow and contamination concerns. The DPF system adds exhaust restriction and heat management demands, while the EGR system recirculates soot into the intake tract.
- At the same time, the factory CCV system introduces oil vapor into the intake system, which can combine with soot over time and contribute to carbon buildup, reduced airflow efficiency, and increased maintenance concerns.
Key Features
- Optimized Fast Turbo Spool: 4" pipe diameter maintains ideal exhaust gas velocity for faster turbocharger spool-up, crisp throttle response, and minimal cab drone.
- Reduces EGTs & Ends Active Regens: Replaces the heavy, restrictive DPF canister with a smooth 4" race pipe to eliminate primary exhaust backpressure and stop fuel-draining regenerations.
- Dual-Source Intake Protection: Removes EGR soot and reroutes CCV oil mist away from the engine—stopping carbon sludge buildup and keepin turbo, intercooler, and intake tract dry and claen.
- Saves Maximum Labor & Shop Costs: Installing all three systems at once avoids duplicate teardown shop labor around the tight rear engine compartment and chassis.
FAQ
Q: How do the CCV Reroute and EGR Delete work together to protect my engine?
A: On a stock LML, CCV oil mist acts like glue and EGR soot like powder, forming thick sludge in your intake. Deleting the EGR removes the soot and rerouting the CCV removes the oil—keeping your intake, turbo, and intercooler dry and clean.
Q: Do I need to completely drain or remove the DEF tank when installing this kit?
A: No, but it's recommended. Custom tuning disables the DEF system, so the tank becomes inactive. You can leave it empty on the frame or drop it completely to save weight and free up space.
Q: Will the 4" DPF delete race pipe create high-frequency drone inside the cab?
A: No. The 4" mandrel-bent pipe balances high exhaust flow with sound control. Retaining your stock tailpipe (or adding an muffler), delivers a deep exhaust growl under throttle while keeping the cabin quiet at highway speeds.
Q: How does this kit improve long-term engine oil cleanliness and component life?
A: By stopping EGR soot and CCV oil mist from recirculating into your combustion chambers, your engine oil stays clean far longer, reducing soot contamination in the oil pan. This prevents premature wear on cylinder walls, piston rings, and turbo bearings—drastically extending overall engine service life.
