FITMENT
- 2015.5-2016 6.6L Silverado & Sierra Duramax 2500HD/3500HD LML engine models with the 3-bolt flange.
- Does NOT Fit 2011-2015.5 model with the V-Band Clamp style.
- Please physically inspect underneath 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: How do I verify if my truck is a 2015.5 model with the 3-bolt flange/clamp exhaust connection?
A: Check the connection downpipe interface directly behind the turbo or front catalytic converter section. Early 2011–2015 LML models use a standard V-band clamp, whereas 2015.5- 2016 models feature a distinct 3-bolt triangular flange setup.
Q: What should I do with the unplugged EGT and NOx exhaust wiring harnesses?
A: Since the tuner disables emissions diagnostics, you can safely remove the sensors. To protect open harness connectors from dirt and moisture, use the Harness Plug to snap weather-tight caps onto open plugs and prevent corrosion.
Q: Can I complete the ECM flashing process through the OBDII port without removing the ECU?
A: Yes. The Mini Maxx V2 flashes the LML ECM directly through the OBDII port under the dashboard. No bench flashing, ECU removal, or unlocked replacement ECMs are required.
Q: Do I need to remove the factory DEF tank under the passenger side frame rail after deleting?
A: Removing the DEF tank is completely optional. Once the Mini Maxx V2 permanently disables DEF dosing, level sensors, and tank heaters, you can leave the empty tank mounted or unbolt it to gain ground clearance and drop excess weight.
