FITMENT
- 2017-2019 6.6L Silverado & Sierra Duramax L5P 2500HD 3500HD Diesel engine trucks.
- Note: Will NOT fit Cab & Chassis commercial-style trucks.
DESCRIPTION
Product Overview
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The factory emissions and exhaust systems on L5P engines present major restrictions to turbo spool and long-term reliability. The crushed factory turbo downpipe and heavy DPF canister trap extreme exhaust heat under hood, creating intense backpressure and triggering fuel-draining active regenerations.
- Meanwhile, the factory EGR cooler feeds hot, abrasive exhaust soot directly into the intake manifold, baking into sticky carbon sludge and introducing severe coolant leak risks. Additionally, removing factory sensors leaves exposed wiring harnesses vulnerable to water and debris.
Key Features
- Rapid Turbo Spool & Response: Reduces backpressure directly off the turbine housing, allowing the L5P VGT turbocharger to spool up noticeably faster.
- Stops Intake Carbon Sludge & Coolant Leaks: Removes the factory EGR cooler, stopping abrasive soot from choking intake valves and eliminating internal coolant loss risks.
- Weatherproof CAN-BUS Plugs: Comes with specialized connector plugs that seal disconnected factory sensor wiring harnesses, keeping moisture, dust, and corrosion out of electrical system.
- Reduces EGTs & Eliminates DPF Regens: Replaces restrictive exhaust canisters and downpipe crimps to end fuel-draining active regenerations and drastically lower EGTs.
FAQ
Q: Why upgrade the downpipe and downpipe-back exhaust together?
A: The factory exhaust system creates restrictions both directly after the turbocharger and further downstream. The 3.5" downpipe improves turbo outlet flow, while the 4" DP-back exhaust provides a smoother, higher-flow exhaust path.
Q: What does the 4" downpipe-back exhaust system improve?
A: The 4" exhaust system provides increased exhaust flow capacity compared with factory emissions components, helping reduce exhaust restriction and improve overall airflow performance.
Q: Why does the L5P require CAN Bus plugs?
A: The L5P platform uses electronic communication between multiple vehicle modules. The included CAN Bus components are designed to support communication after hardware changes.
Q: Is this more complete than a DPF pipe-only kit?
A: Yes. A DPF pipe-only upgrade mainly improves exhaust flow. This complete kit also upgrades turbo outlet airflow, reduces EGR-related intake contamination, and includes CAN Bus components for a more complete installation.
