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 6.6L LML suffers from power-robbing DPF regenerations, fail-prone DEF sensors triggering 55 MPH limiters, and EGR gas spiking engine temperatures. Worse, the factory CCV vents oily vapors into the intake, mixing with soot to create thick valve sludge and turbo buildup.
- The LML 4" Delete Kit with Mini Maxx V2 Tuner fixes these issues completely. The pre-loaded tuner clears CEL codes and disables DPF, DEF, and EGR diagnostics, while the 4" race pipe, CCV reroute, and EGR bypass lower EGTs, stop intake sludge, eliminate backpressure, and unlock 150+ HP on-the-fly.
Key Features
- Shift-on-the-Fly Performance: Change power settings on-the-fly directly from the cabin display, unlocking additional horsepower and eliminating throttle lag.
- Prevents Oil Sludge: CCV reroute prevents oily vapors from coating intake valves, while EGR delete stops hot gas recirculation to protect engine oil.
- Pre-Loaded Mini Maxx V2 Tuner: Automatically turns off active DPF regenerations, DEF fluid level/heater warnings, and EGR/CCV diagnostics without requiring extra custom files.
- 4-in-1 Delete Package: Removes and disables restrictive DPF filters, DEF/AdBlue urea systems, EGR coolers, and failure-prone CCV reroutes in one order.
FAQ
Q: What is the benefit of a 4-inch race pipe over keeping the stock exhaust tailpipe?
A: 4" race pipe replaces the restrictive DPF/CAT section while keeping stock tailpipes. It optimizes airflow to eliminate backpressure and lower EGTs, ensuring an easy fit around tight crossmembers without excessive interior sound drone.
Q: Why is a CCV reroute included with this LML Duramax package?
A: Factory CCV systems vent oily vapors into the intake, mixing with soot to form turbo-coating sludge. The CCV reroute vents these vapors outside, keeping your turbo and intake completely clean.
Q: Will the included Mini Maxx V2 tuner clear check engine lights and stop DEF speed limiters on my LML Duramax?
A: Yes. The pre-loaded delete software automatically turns off diagnostic trouble codes (CEL) for DPF pressure sensors, DEF fluid level/heater faults, and EGR valves, bringing your LML Duramax out of speed-limited limp mode instantly.
Q: Does deleting emissions prevent Bosch CP4 fuel pump failures on 2011–2015 LML Duramax engines?
A: No. While deleting EGR reduces fuel system heat, it won't stop metal debris from destroying injectors if the CP4 fails. To protect engine, install the CP4 Disaster Prevention Bypass Kit to reroute metal debris back to the tank and prevent catastrophic fuel system damage.
