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: Why is there a specific kit for 2015.5–2016 Duramax LML models?
A: GM updated chassis frame rail hangers, downpipe shield clearances, and sensor connector layouts during the 2015 mid-year transition. This kit is tailored specifically for the 2015.5–2016 platform layout for an exact bolt-on fit.
Q: Will the included tuner bring my truck out of DEF 55 MPH limp mode immediately?
A: Yes. As soon as you flash the ECM with the pre-loaded delete software, the tuner clears the speed limiter countdown, resets the emergency limp mode, and turns off all DEF warning messages on your driver information screen.
Q: Can I completely remove the DEF tank under the passenger frame rail after flashing the tuner?
A: Yes. Once the tuner disables the DEF system in the ECM, the physical DEF tank, pump, and heater assembly can be unbolted and removed from the frame rail without triggering fault codes.
Q: Does the tuner allow speedometer calibration for larger tires?
A: Yes. The tuner includes built-in menu settings that allow you to adjust tire diameter and gear ratios to re-calibrate your speedometer and odometer accurately.
