All-In-One 2024-2025 L5P Duramax Off-Road Performance KitAll In One 20242025 L5P Duramax Off Road Performance Kit Bored of your stock 2024+ L5P? This all in one performance package is engineered to unleash the full potential of your brand new Duramax combining everything you need for serious power, smoother shifts, and bulletproof reliability. This isnt your average tune setup its a complete, professionally built off road performance system with custom tuning, premium hardware, and HP Tuners integration

All-In-One 2024–2025 L5P Duramax Off-Road Performance Kit

Bored of your stock 2024+ L5P? This all-in-one performance package is engineered to unleash the full potential of your brand-new Duramax — combining everything you need for serious power, smoother shifts, and bulletproof reliability.

This isn’t your average tune setup — it’s a complete, professionally built off-road performance system with custom tuning, premium hardware, and HP Tuners integration designed specifically for the latest E42 ECM and T93 TCM platforms.

Whether you’re towing, racing, or daily driving, this kit transforms your new L5P from mild to monster. 🔥

⚙️ What’s Included

1️⃣ Five Custom Single Tunes 

Fully custom-calibrated for your VIN and setup using HP Tuners RTD4 — not generic files.
Each file is tailored for different driving styles with balanced fueling, torque management, and safe EGTs.

• File 1: Stock power (OEM baseline)

• File 2: +50 HP – Ideal for towing and heavy loads

• File 3: +100 HP – Daily driving with better throttle response

• File 4: +150 HP – Street tune with strong midrange pull

• File 5: +200 HP – Max effort race file for full-performance

designed for smooth transitions and clean, reliable power delivery.

2️⃣ Transmission Tuning for 10-Speed (T93)

Optimized specifically for the new 10-speed Allison found in 2024+ trucks:

• Sharper, quicker shifts with no flare or delay

• Higher line pressure and increased clutch holding capacity

• Revised torque converter lock-up for towing and acceleration

• Adjusted shift scheduling for better power transfer and cooler temps

3️⃣ HP Tuners RTD4 Device + 8 Credits

• Latest-generation reader/flasher compatible with HP Tuners TDN App

• 8 credits included to license your ECM for custom tuning access

• (Note: MPVI3 devices are not compatible with 2024–2025 L5Ps)

4️⃣ HP Tuners ECM Upgrade Service

Required for all 2024–2025 trucks — your E42 ECM must be sent to HP Tuners for internal modification before it can accept tuning.
We’ll walk you through the process and handle setup.

5️⃣ CAN Bus Plugs

OEM-grade CAN plugs required for proper communication and network termination after EGR and emissions removal.

6️⃣ Performance EGR Upgrade Kit

Removes restrictive EGR components to reduce soot buildup, heat soak, and intake contamination — improving airflow and long-term reliability.

7️⃣ High-Flow Downpipe

Precision-built stainless downpipe to improve turbo efficiency, reduce drive pressure, and enhance exhaust tone.

8️⃣ Full 4” or 5” Stainless Exhaust System

High-quality turbo-back straight-pipe exhaust system that lowers EGTs, increases flow, and delivers that deep, aggressive Duramax sound.

🧠 Transmission Tuning Benefits

• Increased line pressure for more torque capacity

• Faster, cleaner shifts with reduced slip

• Optimized converter lock-up for towing and performance

• Lower transmission temps and better power delivery

Each calibration is built for power, drivability, and reliability — tuned by professionals who specialize in the Duramax platform.

⚙️ Requirements

• E42 ECM (must be upgraded by HP Tuners before tuning)

• HP Tuners RTD4 device (MPVI3 not supported)

• 8 HP Tuners credits

• Compatible T93 TCM

⚠️ Important Notice

This product is intended for off-road and competition use only.
Not legal for use on pollution-controlled vehicles operated on public roads.

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