EZ LYNK AutoAgent 3 | 2006-2021 6.7L Cummins | EZ LYNK Advanced Free Custom Tuning

$1,199.00

SAVE $850+ WITH FREE TUNING

Your Cummins is being held back. Fix that. The EZ LYNK AutoAgent 3 rips the limits off your 2010–2021 6.7L — wireless custom tunes, live engine data, and total control without ever popping a hood or opening a laptop. This is the tuner everything else wishes it was.

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Fast US Shipping
Ships directly from our Midwest warehouse via UPS or FedEx Ground. No customs delays — reliable domestic delivery to your door.
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Guaranteed Fitment
We verify every VIN for 100% compatibility. If it doesn't fit, we cover return shipping. No questions asked.
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Free Custom Tuning Included
Built for your truck, your driving style. Optimized for work, towing, or daily driving — a $500+ value at no extra cost.

CHOOSE YEAR:

FREE
$500
Lifetime Tuning
FREE
$300
Lifetime Support
FREE
$150
Express Shipping
🔒 Secure Checkout
✓ VIN-Verified
🇺🇸 Ships from USA
🛡️
Guaranteed Fitment or We Pay Return Shipping
VIN verified for 100% compatibility. Doesn't fit? We cover the return.
Secure Payment Methods
VISA MASTERCARD AMEX PAYPAL SHOP PAY APPLE PAY

WHY WE OFFER FREE TUNING?

Our tunes are built in-house by engineers with hands-on experience tuning Cummins, Duramax, and Power Stroke engines. No third parties, no recycled files — just clean, custom tuning dialed in for your exact setup. Adjusting per vehicle costs us next to nothing, so we don't pass a charge on to you. It's that simple.

WHO MAKES YOUR TUNES?

In-House Expertise
 

Every one of our tunes is developed in-house by elite engineers—zero outsourcing, zero third-party files. These are experts who have worked directly with the industry giants: Cummins, Power Stroke, and Duramax. They understand these platforms backward and forward, ensuring every tune is clean, reliable, and specifically calibrated for your setup.
 

How Tuning Works
 

We build our tunes for real truck owners—people who tow, haul, and drive their rigs daily. These are clean, dependable files created by pros who know the trade. No racing gimmicks, just robust performance and improved fuel economy.

You provide the specs (VIN, make, model, and current mods), and we craft a custom tune that fits your truck perfectly. Once installed, you can say goodbye to DEF issues and dashboard warnings. You’ll be set to tow with total confidence—all included, with no hidden fees.
 

What Does the Device Do?
 

The tuner simply plugs into your OBD-II port to load your custom tune. It also serves as a command center, allowing you to monitor performance, run diagnostics, and keep your truck running at its best.

HOW DOES TUNING WORKS?

Tuning is simply adjusting your truck’s computer (the ECU) to unlock better performance, fuel efficiency, and driving feel. It modifies how your engine behaves by optimizing key settings like fuel/air ratios, ignition timing, and turbo pressure.

 

How We Build Your Advanced Custom Tune
 

When you get started with us, we’ll just ask for the basics—your VIN, make, model, and any unique mods you have. With that info, our tuning pros get to work building a custom tune specifically for your rig.

We’re talking about maximizing horsepower and torque while completely removing those restrictive emissions limits. Once it’s installed, say goodbye to DEF fluid and annoying check engine lights. You’ll be able to tow heavy loads with absolute confidence.

And here’s the best part: this entire process is included in our service. No extra fees—and we are the only ones offering that.
 

What Does the Tuning Device Do?
 

The device plugs right into your OBD-II port to communicate with your truck’s ECU. It allows you to load your custom settings (or "tunes") in minutes to adjust the engine's performance. Beyond that, it lets you monitor live data, run diagnostics, and keep a close eye on exactly how your truck is running.

HORSEPOWER SETTINGS

Shift-On-The-Fly Power Control

Toggle between 4 power levels in real time—no stopping, no reflashing.

  • Level 1 – Stock: Daily driving & towing
  • Level 2 – +50 HP: Daily driving & towing
  • Level 3 – +100 HP: Daily driving & towing
  • Level 4 – +150 HP: Performance

Want Something Different?

These are our most popular settings, but we can customize your tune however you'd like. Just let us know on the form we send after your order—we'll make it happen.

VEHICLE FITMENT

2006–2017 Ram Cummins 6.7L Diesel 2500, 3500 Fits all pickup trims, cab sizes, and box lengths. Does NOT fit Cab & Chassis trucks.
 

2018–2021 Ram Cummins 6.7L Diesel 2500, 3500 Fits all pickup trims, cab sizes, and box lengths. Does NOT fit Cab & Chassis trucks..

SHIPPING TIME

All orders are processed and shipped within 1–2 business days to all 50 U.S. states. 

Once your order ships, expect delivery in 5–8 business days depending on your location. You'll receive a confirmation email with tracking info as soon as it's on the way. 

Delivery times may vary slightly due to carrier schedules or other factors outside our control.

YOUR VEHICLE INFORMATION

Every EZ LYNK comes loaded with a custom tune built specifically for your truck. After purchase, you'll fill out a quick form with your VIN, make, and year — and we'll preload your tune onto the device before it ships. By the time it hits your door, it's ready to go. Just plug it in and drive.

Why TrueAmericanDiesel

Built Different. Backed by Real Diesel People.

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Free Custom Tuning
Your truck. Your driving style. We build your tune from scratch — optimized for work, towing, or daily driving.
$500+ Value — Free
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Real Savings
Stop bleeding money on DPF cleanings, DEF refills, and emission repairs. One bundle saves you thousands.
Save $14,000+
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Patriot-Powered
American trucks deserve American service. Built by diesel owners who drive what we tune.
Real People · Real Support
Trusted by 10,000+ diesel truck owners across the United States 🇺🇸
⚠️ The Math Doesn't Lie

Your Emissions System Is Draining Your Wallet

Every year you keep factory emissions, you're paying for a system engineered to fail. Here's what it's really costing you.

🔧
DPF Cleaning
$300
every 6–12 months
💀
DPF Failure
$4,000
when cleaning stops working
⚙️
EGR Repair
$300
clogs repeatedly
🚫
SCR Failure
$5,000
catastrophic repair
📡
DEF Sensors
$1,500
fail without warning
💧
DEF Fluid
$5,000
over truck's lifetime
It adds up fast
Total Cost of Keeping Emissions
$16,100+
And that's just the first round. These failures repeat.
$16,100+
Keeping Emissions
$1,349
Full Delete Bundle
You Save $14,751+


Stop Wasting Money →