2023-2026 Powerstroke Peakside EZ-Lynk 4-Week Tune Package

This is the 4-Week Lynk Package. If you want the 50HP Single Flash 4-Week Lynk Package, please click here. If you want the Lifetime Lynk Package, please click here.

This package includes the EZ-Lynk Auto Agent 3.0 device and the Peakside Performance 4-Week Lynk support package. Already own an Auto Agent? Order the tune files on their own instead.

Unleash the full potential of your 2023-2026 6.7 Powerstroke with custom EZ Lynk tune files from Peakside Performance. Whether you're hauling heavy, hitting the highway, or dialing in for all-out performance, these calibrations are built to maximize torque, boost throttle response, and improve drivability across the board. Our tunes optimize shift strategies, fuel delivery, and throttle mapping, giving your Super Duty the power and reliability it was meant to have from day one.

Part Number: AA-PEAK-PS67-EZLNK-2326-LTD

Peakside Performance CMS6 Cruise SOTF files put six power levels, from 25HP to 150HP, on your factory cruise control buttons, with the tachometer showing which level you picked. No SOTF switch is needed, and normal cruise control still works outside the menu. CMS is exclusive to Peakside Performance and is included on all current Lifetime (unlimited) support packages and on all new links going forward.

How to select a power level:

1. Turn cruise control off and make sure high idle is off.
2. Hold CANCEL (or RES/CANCEL on a combined button) for about one second, until the tachometer jumps to the menu, then release it.
3. Press SET+ or SET- to step through the levels. The tachometer shows your level: 0 RPM is 25HP, 1,000 RPM is 50HP, 2,000 RPM is 75HP, 3,000 RPM is 90HP, 4,000 RPM is 120HP and 5,000 RPM is 150HP.
4. Press CANCEL to exit, or leave it and the menu closes on its own after about five seconds. Give it a few seconds to save before shutting the truck off.

Dynamic Idle lets you choose your own idle sound, from a deep rumble to a full hiss, right from the factory cruise control buttons. Instead of flashing a different file, you pick one of six turbo vane positions. Idle speed stays the same, and your choice is saved through key-off. On a CMS6 Cruise SOTF file, power and idle are set separately, so any idle sound runs on any of the six power levels.

Dynamic Idle comes in CMS6 Cruise SOTF and Level 1-5 files for stock, KC and Titan turbos, and in the stock turbo CAC SOTF file. Each one also comes in an LBF hardcut version.

How to choose an idle sound:

1. Turn cruise control off and make sure high idle is off.
2. Hold SET- for about one second, until the tachometer jumps to the menu, then release it.
3. Press SET+ or SET- to step through the six settings. The tachometer shows your choice: 0 RPM is the deepest rumble (about 10% vane), then 1,000, 2,000, 3,000 and 4,000 RPM, up to 5,000 RPM for a full hiss (about 90% vane).
4. Press CANCEL to exit, or wait about five seconds. Give it a few seconds to save before shutting the truck off.

The LBF Menu comes standard on every CMS6 Cruise SOTF file and every Dynamic Idle file. It switches between Normal and LBF (low boost fueling) on the fly from the same buttons, and your choice is saved through key-off. It changes the smoke limit tables only; the 4,000 RPM hardcut stays in the separate LBF hardcut files.

How to switch: with cruise control and high idle off, hold SET+ for about one second to open the menu, then press SET+ for LBF (tachometer shows 2,000 RPM) or SET- for Normal (1,000 RPM).

CPX fuel pump versions of the tunes are available for KC, Titan/RDS and non-VGT turbo setups, in Level 1-5, CAC SOTF and CMS6 Cruise SOTF files. They carry the fuel pressure calibration for a CPX pump and must only be used on a truck with a CPX pump installed.

Already linked? Trucks with an active Peakside link (Lifetime, or 4-Week within its 4 weeks) will see the new files in the EZ-Lynk app. Flash a Dynamic Idle file to get Dynamic Idle and the LBF Menu.

All Peakside Performance 2020-2026 6.7L Powerstroke tune files include a high idle feature controlled with your factory cruise control buttons.

How to use high idle:

1. Start the truck and leave it in Park with cruise control switched off.
2. Press and fully release the brake once after starting, with your foot off the accelerator.
3. Double click RES/CANCEL and high idle will start at 1,000 RPM.
4. Use SET+ and SET- to raise and lower the idle 50 RPM per press, up to 2,000 RPM.
5. Press RES/CANCEL to exit. Pressing the brake, shifting out of Park, moving, pressing the accelerator or turning cruise on will also turn high idle off.

High idle resets to off every time the truck is restarted.

• Provides access to all compatible tuning files for 4 weeks.
• Ideal if you only need a single tune flashed to your vehicle.
• The single tune you select will remain active after the 4-week period expires.
• Easily upgrade to Lifetime Lynk for indefinite access to all tuning files and software updates.

• EZ-Lynk Auto Agent 3.0 device (100EE00AA3)
• Peakside Performance 4-Week Lynk support package (PEAK-PS67-EZLNK-2326-LTD)
• Single File Tunes - Tailored to your exact needs, each file delivers sharper throttle response, improved efficiency, and enhanced towing capability.
• Shift on the Fly Tunes - Multi-purpose, multiple levels controlled by the switch of a dial. If you are looking to do some towing during the week and want to turn it up on the weekends, this package is for you!
• Support Packages - Planning future mods? Peakside's "Lifetime" support package includes ongoing revisions, so your tune evolves as your truck does. This "4-week" support package is perfect for those looking for a single flash
• Transmission Tuning - All support packages include transmission tuning for all 2023-2026 models, including TCM tuning for 2026. Optimized shift pressures to keep shifts smooth while increasing shift speed and clutch holding capacity. Choose from our classic shift patterns, Regular, 2nd Gear start or a 1-3 Skip.

• SOTF Tuning: Optional. With Cruise Map Selection you can change power levels using the factory cruise control buttons, or add a physical SOTF switch if you prefer one.

• Cloud-based tuning: run updates and receive new tunes from anywhere
• Real-time diagnostics and control from your Android or iOS device
• Firmware updates performed automatically
• Datalogging, live graphing and customized warning levels
• Read and clear codes
• Share vehicle diagnostics live with your technician

• Installation is simple: connect and flash via the OBDII port; no ECM swap or under-hood connection is required.

Click here to view EZ-Lynk instructions

Do not want to read? Check out the install video below!

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