2017-2023 L5P ECM Custom Tuning Support (GM Duramax)

Slab Industries Diesel — Custom EZ Lynk ECM Tuning Support | 6.6L GM Duramax L5P (2017–2023)

Get a custom ECM tune built specifically for your 6.6L Duramax L5P. More towing torque, sharper throttle response, and cleaner power delivery — all delivered directly to your EZ Lynk device. No sending your ECM anywhere.

This product includes ECM (engine) tuning only. Transmission (TCM) tuning is sold separately — contact us for details.

This tuning is EZ Lynk only. Tuning files are delivered through the EZ Lynk AutoAgent platform. Looking for HP Tuners support? We offer that as a separate product.

What's included

• Custom ECM tune calibrated for your specific truck and mods
• Both single-position and switch-on-the-fly tuning files, based on your preference
• Support window based on selected plan (see options below)

Your Tune File Library

You'll receive a full library of tune files to choose from, with multiple power levels and custom calibrations built specifically for your truck and modifications. Pick the setup that fits how you drive:

• Switch-on-the-fly (SOTF) tuning files — change power levels instantly while driving using your EZ Lynk app, no need to pull over and reflash
• Single tuning file — one dedicated calibration loaded and ready to go, set-it-and-forget-it style

Every file in your library is custom-calibrated for your specific truck, engine, and mod list — not a generic off-the-shelf tune.

Delivery

Once your custom tune is calibrated, your complete tuning file library is sent directly to the EZ Lynk AutoAgent app on your phone. No shipping, no waiting — you'll receive a notification in the app when your files are ready to download and flash to your truck.

Tune options

• 4-Week EZ Lynk Support — $900: Custom ECM tune delivered to your EZ Lynk device with 4 weeks of revision support.
• Lifetime Tuning Support — $1,200: Custom ECM tune plus unlimited lifetime revisions as your build evolves.

Don't already own an EZ Lynk AutoAgent? Select “Device Included” at checkout to add the physical EZ Lynk AutoAgent device for $500.

Expected results

• Improved throttle response and reduced lag
• More torque under towing and hauling load
• Cleaner, more consistent power across all RPM ranges
• Tunable power levels via EZ Lynk app

Fitment

• Engine: 6.6L GM Duramax L5P
• Years: 2017–2023
• Trucks: Chevy Silverado 2500/3500, GMC Sierra 2500/3500
• Required hardware: EZ Lynk AutoAgent (sold separately, or select “Device Included” at checkout)

How it works

1. Purchase your support plan
2. We contact you to gather your truck details and mod list
3. Custom ECM tune is calibrated and delivered to your EZ Lynk device
4. Revisions available within your support window

Support

Email slabindustriesdiesel@gmail.com before purchasing to confirm your truck and discuss your build goals.