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 main advantage of choosing an LML delete kit with a muffler?
A: The inline performance muffler smooths out high-frequency exhaust rasps and eliminates annoying cabin drone during highway towing, giving your LML Duramax a deep, refined V8 diesel tone rather than an excessively loud, open-pipe roar.
Q: Will the included tuner bring my 2011–2015 Duramax LML out of DEF 55 MPH limp mode?
A: Yes. The pre-loaded delete software automatically turns off diagnostic trouble codes (CEL) for DEF level sensors, fluid heaters, NOx sensors, and DPF differential pressure switches, clearing speed limiters instantly.
Q: Can I completely remove or bypass the DEF tank after installing this kit?
A: Yes. Once the tuner flashes the ECM with the delete software, the entire DEF tank, pump, and heater assembly can be unbolted or bypassed without triggering fault codes or warning lights.
Q: Does removing the EGR cooler on an LML Duramax risk causing engine coolant leaks or air pockets?
A: No. The included EGR delete package features a heavy-duty coolant bypass tube that completes the engine cooling loop seamlessly, eliminating the factory EGR cooler which is prone to internal cracking and coolant leaks.
