At Protech Diesel Center, we carry the parts, tuning files, and complete performance kits that Duramax owners actually need — including the full Dieselr lineup of platform-specific ECM and TCM calibrations. From the early LB7 to the latest L5P and LM2, every product in our lineup is selected by diesel specialists who know these engines inside and out.
Real Performance Parts & Tuning for Every GM Duramax (2001–2023)
Dieselr Tune Kits & All-In-One Bundles
ECM tuning, exhaust, and full upgrade kits for 6.6L LB7, LLY, LBZ, LMM, LML, L5P, and 3.0L LM2 Duramax models.
Proven Performance Parts
Every turbo, tuning file, fuel system upgrade, and transmission calibration is tested on real trucks and backed by real results. No filler, no guesswork.
Recommended by Diesel Specialists
We don't sell what looks good on paper. We carry what works — selected, tested, and trusted by the team at Protech Diesel Center.
GM Duramax All-In-One Kits
Take the guesswork out of building your Duramax. Our Dieselr All-In-One Kits bundle custom tuning, transmission calibration, exhaust, and key reliability upgrades into one complete package — built and matched for your exact truck.
Duramax EGR Upgrade Kits
Factory EGR systems are a common failure point on the Duramax platform. We carry Dieselr's EGR upgrade and delete kits, paired with proven exhaust solutions, to lower EGTs, improve airflow, and keep your truck running reliably for the long haul.
Sale
Dieselr Parts
DIESELR EGR Upgrade Kit w/ Intake Pipe (2004.5-2005 Duramax 6.6L LLY)
$397.84
In Stock
Our Featured Collections
Duramax Performance & Tuning — Built for Real-World Results
Tested, proven performance upgrades for every 2001–2023 Duramax — from custom tuning bundles to exhaust systems and EGR upgrade kits.
Got Questions About Your Truck Upgrade?
Not sure which part fits your truck or how it improves performance? We’ve got you covered.
The L5P Duramax (2017–2023) responds best to ECM tuning, transmission calibration, turbo upgrades, and a high-flow exhaust. A properly built Dieselr tuning package delivers stronger power delivery, better towing performance, and long-term reliability.
Costs vary depending on your truck's year, the level of tuning required, and whether you're upgrading major components like the EGR system or exhaust. Our team can help match the right solution to your power and reliability goals.
Yes. We carry complete All-In-One Performance Kits for LB7, LLY, LBZ, LMM, LML, and L5P Duramax models — bundling tuning, transmission calibration, and exhaust components into one solution.
For towing, focus on tuning, torque management, and exhaust upgrades. A properly tuned ECM and TCM setup helps maintain safe EGTs, smarter shift points, and stronger load-handling capability.
With proper maintenance and the right upgrades, a Duramax can run well beyond 300,000 km. Regular fuel system care, upgraded cooling, and quality transmission tuning all play a major role in long-term reliability.