DIESELR 3.0L GM Duramax LM2 E46 All In One Kit (2020-2022)

DIESELR 3.0L GM Duramax LM2 All-In-One Kit (2020–2022)

Complete Tuning & Emissions Solution for 3.0L LM2 Duramax

The DIESELR 3.0L GM Duramax LM2 All-In-One Kit (2020–2022) is the definitive package for GM 1500 truck owners looking to take control of performance, efficiency, and airflow. Built for the 3.0L LM2 engine, this kit replaces all restrictive emissions components and delivers full tuning capabilities with in-house calibrated E46 tune files.

What’s Included in the LM2 All-In-One Kit:

• GDP Commander Autoflasher – Unlock and flash your E46 ECM without needing bench tools.
• DIESELR Commander E46 Tune Files (2020–2022 LM2 3.0L) – Custom-built single tune optimized for daily driving, towing, and reliability.
• 8 GDP Commander Credits – Required to flash the E46 ECM using the GDP Commander.
• DIESELR Cat & DPF Race Pipes – 16-gauge T409 stainless steel system designed to improve flow and reduce backpressure.
• DIESELR EGR Upgrade Kit – Addresses factory airflow issues and improves reliability and efficiency.
• Available Variants:
• Year: 2020, 2021, 2022
• EGR Kit: Included

LM2 Exhaust System Features:

• Direct-fit race pipe retains the stock muffler for a quieter exhaust note.
• Mandrel-bent T409 stainless steel construction with improved flanges.
• Contour-bent hangers and TorcTite® clamps for a secure and fast install.

Why the DIESELR LM2 All-In-One Kit Works:

• Eliminates restrictive components in the 3.0L Duramax LM2 emissions system.
• Reduces EGTs and backpressure to improve performance and engine health.
• Designed specifically for off-road users and closed-course competition.

LM2 All-In-One Kit Fitment:

• Compatible with 2020–2022 GM 1500 trucks featuring the 3.0L Duramax LM2 engine.
• Not for Cab & Chassis configurations.
• Off-road use only. Not legal for on-road operation.

Installation Notes:

• Direct bolt-on install. No cutting or welding required.
• Requires Windows laptop and internet access.
• ECM must be unlocked via GDP Commander Autoflasher.
• Professional installation recommended.