PREORDER & SAVE! PDI Big Boss Tuner for 2021–2026 Detroit DD13, DD15 & DD16

Get More From Your Gen 5 Detroit — Preorder Now & Save $200

More power. Better fuel economy. More insight into your engine. The PDI Big Boss Performance Tuner for 2021–2026 Detroit engines brings performance programming, vehicle monitoring, and diagnostic tools together in one easy-to-use package.

Available for Gen 5 Detroit DD13, DD15, and DD16 engines, this new tuner is coming to Parley’s Diesel Performance—and you can reserve yours now.

Preorder today and save $200. Orders are scheduled to ship in mid-October 2026. Plus, we’re including a FREE PDI Big Boss Tuner Magnetic Mount, a $50 value and Parley’s Diesel exclusive.

Performance That Fits Your Priorities

Whether you’re covering miles in a big rig or heading out in your diesel motorhome, the Big Boss Tuner gives you options for how your engine performs.

Choose from two added power levels:

PDI’s engine and transmission-safe programming is designed to improve power and fuel mileage while keeping operation straightforward. Select the tune that fits your needs and put your Detroit to work.

Know What’s Happening Under the Hood

The Big Boss Tuner does more than change engine performance. It also gives you access to information that helps you stay informed about your vehicle.

Read and clear diagnostic trouble codes, display multiple operating parameters with the Big Boss Monitor, and access diesel particulate filter management features—including a DPF restriction test and manual regeneration.

From checking a trouble code to keeping an eye on operating conditions, these tools put useful information within reach.

Simple Installation and WiFi Updates

Getting started is simple with a wireless internet connection. WiFi updates also help keep your tunes and features current, making it easy to stay up to date.

Product Features

• Tunes 2021–2026 Gen 5 Detroit DD13, DD15, and DD16 engines
• Two added power levels: +10% Economy Tune and +15% Power Tune
• Reads and clears diagnostic trouble codes
• Simple installation using a wireless internet connection
• Displays multiple vehicle operating parameters with the Big Boss Monitor
• Emissions legal in all 50 states; comes with a CARB Executive Order
• WiFi updates for tunes and features
• DPF restriction testing and manual regeneration
• Free magnetic mount included from Parley’s Diesel Performance

A Secure Mount for Your Cab—Included Free

Keep your Big Boss Tuner conveniently positioned with the included PDI Magnetic Mount. Its strong magnetic hold secures the tuner in your chosen mounting location, while the quick-release design makes attaching and removing it easy.

Engine Fitment

This tuner fits the following Gen 5 Detroit engines:

Part Number: 131009341939 — Gen 5 Detroit