I’ve built and tuned a lot of trucks over the years, but Empire Diesel just raised the bar. I picked up their 2019–2023 6.6L L5P Duramax EZ Lynk AutoAgent 3 All-In-One Custom Kit with the Lifetime Support Package, and it’s honestly the smoothest, most complete setup I’ve ever installed.

From the moment I ordered, the communication and support were first-class. They sent clear instructions, walked me through setup, and had my custom tunes loaded faster than I expected. The EZ Lynk paired flawlessly — within minutes my truck was linked, tuned, and ready to roll.

The difference was night and day. Throttle response is crisp, shifts are perfectly dialed in, and power delivery is smooth across every mode. The 5-level switch-on-the-fly tunes make it feel like I’ve got five different trucks in one — from towing to all-out performance, each map is spot-on. No smoke, no lag, just pure, clean power.

You can tell these guys actually test and perfect their tunes before releasing them. Everything from idle quality to turbo spool feels engineered, not guessed. Plus, knowing I’ve got lifetime updates and real techs who actually answer messages gives me peace of mind.

If you’re serious about tuning your Duramax and want a company that backs up their claims with results, Empire Diesel is the only name you need to know. My truck runs better, sounds meaner, and pulls harder than ever.

This kit shipped quickly and was as described. Thr ordering process was a breeze too. These are high quality parts, the ezlynk is user friendly, and the instructions are very easy to follow. I'd highly recommend this kit!

Worked well thank you!!

Customer service is great.Very prompt in responding to questions. Installation of turn program is very easy with good instructions and photos of service ports. Love the performance of the truck since I have every installed and button up. Thanks for getting from limp mode to zoom mode.

Super easy install!! Love the sound it gave my 2.8L. Mini dirty Mac. Inconjunction with the delete I also purchased from you all!! Don’t even care about fuel now just love the sound and power.

I was in the market for a delete kit for my service truck it was getting up in the miles and starting to give me them headache DPF issues. I searched around for the best priced kit and for an easy install and Empire Diesel had exactly what I was looking for. There product is at high quality easy to install and the EFI live programmer did come pre flashed with the tune I requested. thank you Empire Diesel for quality made parts at a affordable price

The parts came fast and are high quality

Very fast shipping! Great communication. I ordered the wrong exhaust, Empire Diesel sent me a return label and shipped out the new exhaust immediately!
Highly recommend.

Awesome product working great. Along with increased power the truck went from 12 mpg to 17.5 and it tows my 5th wheel like a champ

Great speed in delivery have not installed kit out but looks very good

Quality product and received very quickly! Highly recommend 10/10 all day.

Great quick service

Have not installed it yet but everything looks great and from what I have been told it should be great

great package

It came with everything needed for the delete, and so far so good, the customer service team is pretty nice and informative, and the tuning techs are willing to help figure out any issues you may have.