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Serious Performance Upgrades for Every GM Duramax (2001-2023)

BUILD YOUR CUSTOM DURAMAX KITSHOP DURAMAX PARTS & TUNING

DIESELR delivers real tuning and real performance for Duramax owners who demand more. From the early LB7 models to the latest L5P and LM2 platforms, we provide the best parts, tuning, and complete performance kits to ensure your truck pulls harder, runs cleaner, and stays on the road longer.

Everything You Need for Your Duramax. Nothing You Don’t.

✅ Complete All-In-One Kits – ECM tuning, exhaust, and upgrade kits for 6.6L LB7, LLY, LBZ, LMM, LML, L5P, and 3.0L LM2 Duramax models.

✅ The Best Performance Parts – Every turbo, tuning file, fuel system upgrade, and transmission calibration is tested and proven. No fluff—just real results.

✅ Built by Experts, Not Marketers – No gimmicks. Just industry-leading tuning, transmission refinement, and real-world-tested parts designed for serious Duramax performance.

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GM DURAMAX CUSTOM KIT BUILDER

DIESELR’s Custom All-In-One Kit Builder takes the guesswork out of Duramax performance. Get everything you need in one package—custom tuning, transmission calibration, exhaust, fuel system upgrades, and key reliability mods—built for your exact truck.

Each kit is crafted with precision, ensuring compatibility and peak performance. Start your customization journey today and transform your Duramax into the powerhouse it was meant to be.

Select your GM Duramax Engine and Generation below to start:

Duramax Performance & Tuning – Built for Real-World Results

DIESELR delivers tested, proven, and no-nonsense performance upgrades for every 2001-2023 Duramax- whether it's custom tuning bundles, exhaust systems, or EGR Upgrade Kits.

Duramax Tuning & Devices

The best tuning solutions for 6.6L LB7, LLY, LBZ, LMM, LML, and L5P Duramax engines. Whether you need custom ECM tuning, transmission calibration, or complete tuning bundles, these solutions are tested and proven to perform.

Duramax Exhaust Systems

Factory exhausts hold your Duramax back. DIESELR’s performance exhaust systems improve turbo spool-up, lower EGTs, and unlock power with turbo-back and downpipe-back options for every Duramax model.

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Duramax EGR Upgrade Kits

The EGR system is a major weak point in many Duramax trucks. DIESELR’s EGR Upgrade Kits are designed to keep your engine running cooler, improve efficiency, and reduce long-term wear.

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Ford Powerstroke Performance & Tuning

Frequently Asked Questions

What are the best performance upgrades for an L5P Duramax?

The L5P Duramax (2017-2023) benefits most from ECM tuning, transmission calibration, turbo upgrades, and high-flow exhaust systems. A proper off-road tuning package from DieselR ensures better power delivery, towing performance, and long-term reliability.

How much does it cost to upgrade emissions-related components on a Duramax?

The cost depends on your truck’s year, the level of tuning required, and whether you’re upgrading major components like the EGR system or high-flow exhaust. DIESELR offers custom solutions to match your power and reliability goals.

Are there Duramax performance kits that include ECM tuning and exhaust?

Yes. DIESELR offers complete All-In-One Performance Kits for LB7, LLY, LBZ, LMM, LML, and L5P Duramax models. These kits include tuning, transmission calibration, and exhaust components for a one-stop performance solution.

What should I consider when upgrading a 2016-2023 Duramax for towing?

For towing, focus on tuning, torque management, and exhaust upgrades. A properly tuned ECM and TCM setup helps maintain safe EGTs, better shift points, and improved load-handling capability.

How long does a well-maintained Duramax engine last?

With proper maintenance and the right upgrades, a Duramax engine can last 300,000+ miles. Key factors include regular fuel system maintenance, upgraded cooling systems, and transmission tuning designed to handle real-world power demands.

GM Duramax Tuning Devices

DIESELR offers industry-leading tuning devices for 2001-2023 GM Duramax engines. Whether you need custom tuning, shift-on-the-fly adjustments, or full ECM/TCM control, these devices deliver real performance, real results.

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