Dynojet Release Harley Davidson 2024 & 2025 Power Vision Range

The wait is finally over—Dynojet now supports Harley-Davidson’s latest Generation 2 Milwaukee-Eight (M8) powerplant found in select 2023 and newer models. Whether you ride a fresh-off-the-floor Road Glide, Street Glide, Low Rider ST, or any other Gen 2 M8-equipped machine, our proven Power Vision and Power Core ecosystem can now read, flash, calibrate, and fine-tune the ECU calibration in your new ride!

The Dynojet Power Vision 3 & 4 have been a "long time coming" for 2024 -2025 Harley-Davidson models stems from Harley-Davidson's implementation of advanced, locked-down Engine Control Units (ECUs) in their 2024+ lineup with the updated Gen2 Milwaukee 8 engines. Here’s a clear explanation of why this has been a significant hurdle and why the Power Vision compatibility is a big deal:

1. Harley’s Locked ECUs: A New Challenge

• Increased ECU Security: For 2024+, Harley-Davidson introduced more sophisticated ECU architecture with enhanced encryption and security protocols, referred to as "locked" ECUs. This was partly driven by stricter emissions regulations (e.g., Euro 5+ and EPA standards) and Harley’s desire to protect their proprietary systems from tampering, ensuring compliance and reliability.
• Impact on Tuning: These locked ECUs made it extremely difficult for aftermarket tuners like Dynojet to access and modify the engine’s parameters (e.g., air/fuel ratio, ignition timing). Unlike earlier models where tuning tools could easily flash the ECU, the 2025 ECUs required reverse-engineering and new software solutions, delaying the release of compatible tuning devices.
• Historical Context: Harley has progressively tightened ECU access over the years, but the 2025 models marked a significant leap in complexity. Previous tuning solutions like the Power Vision 3 or other devices were incompatible without major updates, leaving riders and tuners waiting for a breakthrough.

2. Dynojet’s Development Lag

• Time-Intensive R&D: Cracking the 2025 ECU required Dynojet to invest significant time and resources into developing new firmware and software for the Power Vision 4. This involved decoding Harley’s proprietary protocols, ensuring compatibility with the Gen2 Milwaukee 8 and other 2025 engine platforms, and maintaining compliance with emissions standards (e.g., 49-state compliance, excluding California’s stricter CARB rules).
• Testing and Validation: Beyond cracking the ECU, Dynojet had to rigorously test tunes across various 2025 Harley models (e.g., Touring, Softail, Trike) to ensure performance gains without compromising engine reliability. This process, combined with the need for cloud-based tune libraries and app integration, extended the timeline.
• Firmware Updates Planned: As of July 2025, Dynojet has indicated that full support for certain features (e.g., ABS Bleed, cruise control activation) for 2025 models is still pending, with firmware updates expected to roll out starting June 2025. This shows the complexity of adapting to Harley’s new ECUs, even for a leading tuner like Dynojet.

3. Why It Feels Like a Long Time Coming

• Rider Frustration: Harley enthusiasts, especially those upgrading to 2025 models, have been eager to customize their bikes with aftermarket parts like exhausts or intakes. However, without a compatible tuner, these mods could lead to suboptimal performance, lean air/fuel mixtures, or even engine damage due to the stock ECU’s conservative settings. The wait for a solution like the Power Vision 4 has been frustrating for riders accustomed to immediate tuning options in prior years.
• Market Demand: The aftermarket tuning community, active on forums like Reddit and HDForums, has been vocal about the need for a reliable tuner for 2025 models. The locked ECUs created a bottleneck, with many riders holding off on mods until tools like the Power Vision 4 became available.
• Comparison to Past Models: For earlier Harley models (e.g., 2021-2024), tuners like the Power Vision 3 or Screamin’ Eagle Pro Street Tuner were readily available, often within months of a model’s release. The delay for 2025 models, due to the ECU lockdown, made the Power Vision 4’s arrival feel like a significant milestone.

4. Power Vision 4’s Breakthrough

• Overcoming the Lock: The Power Vision 4 (part # PV4-15-03 for 2025 models) represents Dynojet’s successful effort to bypass Harley’s ECU restrictions. It allows direct flashing of the ECU via Bluetooth and a smartphone app, restoring the ability to customize tunes for performance mods without invasive hardware or dealership dependency.
• Restoring Rider Control: By offering pre-configured tunes for Stage 1, 2, and 3 setups, as well as AutoTune capabilities (with optional wideband O2 sensors), the Power Vision 4 gives riders the flexibility to optimize their 2025 Harleys for power, efficiency, or rideability—something previously blocked by the locked ECUs.
• Emissions Compliance: Dynojet ensured the Power Vision 4 meets 49-state emissions standards, addressing regulatory hurdles while still delivering performance gains, which was a critical factor in its development timeline.

5. Broader Implications

• Industry Trend: Harley’s move to lock ECUs reflects a broader trend in the automotive and motorcycle industries, where manufacturers restrict access to protect intellectual property and comply with regulations. This makes tools like the Power Vision 4 even more significant, as they bridge the gap between factory restrictions and rider customization.
• Community Impact: The release of the Power Vision 4 has been celebrated in the Harley community as a return to the aftermarket freedom riders expect. It enables owners of 2025 models to fully leverage their bikes’ potential, whether for daily commuting or high-performance builds.

Bottom Line:

The Dynojet Power Vision 4’s arrival for 2025 Harley-Davidson models feels like a “long time coming” because Harley’s locked ECUs posed a formidable barrier, delaying aftermarket tuning solutions. The combination of advanced ECU security, rigorous R&D, and the need for emissions compliance slowed Dynojet’s progress, leaving riders waiting for a way to unlock their bike’s performance. The Power Vision 4’s release marks a triumph over these challenges, restoring the ability to tune 2025 Harleys with ease and precision, much to the relief of the riding community.

Product Details

• Respected Name: Dynojet is recognized as one of the most respected names in the world of motorcycle tuning, particularly for Harley-Davidson bikes. This reputation implies reliability and expertise in the field of tuning and performance enhancement.
• Bluetooth Flash Tuning: The Power Vision 4 offers Bluetooth connectivity, allowing users to wirelessly flash tunes to their Harley-Davidson motorcycle's Engine Control Unit (ECU). Bluetooth technology enhances convenience and eliminates the need for physical connections during the tuning process.
• Simple and Easy-to-Use App: The tuning process is facilitated by a simple and user-friendly mobile application. This app provides an intuitive interface that guides users through the tuning process step-by-step, making it accessible even to those without extensive tuning experience.
• Cloud-Based Tuning: The Power Vision 4 offers access to hundreds of tunes stored in the cloud. This means users can easily download and apply pre-configured tunes to their Harley-Davidson motorcycles, providing them with flexibility and customization options to suit their riding preferences and performance requirements.
• Anywhere, Anytime Access: With the cloud-based tuning feature, users can access and download tunes from anywhere and at any time, as long as they have an internet connection. This flexibility allows riders to adjust their motorcycle's performance to meet changing riding conditions or personal preferences.

Currently, does NOT support Android devices.

Custom tune information

Dynojet provides complimentary tunes that accommodate for popular configurations on supported vehicles. Due to the vast amount of aftermarket parts, ECU strategies, and other variables it is possible that we may not have a tune that is compatible with your exact application. We’re working hard to expand our offerings, but in the event you’re not able to find a suitable solution you can consult an Authorized Dynojet Reseller capable of creating a custom tune for you. 

We’ve raised the bar when it comes to what you should expect from a flash delivery device. Power Vision’s easy-to-read, no-nonsense display puts performance at your fingertips, empowering you to choose from our vast library of pre-tested tunes or to build one yourself. The Power Vision flash tuning device updates the tables directly within the ECU to optimize the air/fuel ratio, keeping you in sync and in control. When you’re back in the garage, your performance data can then be clearly seen using our Power Core software to help you improve your ride. The Power Vision device holds multiple tunes at once and allows you to optimize your ride for power, speed or fuel-efficiency. After you’ve flashed your ECU, you can either unplug the device or head out with Power Vision attached as an extra instrument panel. Power Vision easily connects through the OEM-style connectors, so installation won’t keep you away for long.

Dynojet provides complimentary tunes that accommodate for popular configurations on supported vehicles.

Due to the vast amount of aftermarket parts, ECU strategies, and other variables it is possible that we may not have a tune that is compatible with your exact application. We’re working hard to expand our offerings, but in the event you’re not able to find a suitable solution you can consult an Authorized Dynojet Reseller capable of creating a custom tune for you. Lastly, you can submit a tune request through Dynojet.com

This PV3 is capable out of the box to address the enhanced security found on Gen 2 Milwaukee 8 motorcycles (2023.5 and newer) type ECU's. This includes the following:

Harley-Davidson

• FLHX Street Glide 2024, 2025
• FLHXSE CVO Street Glide 2023, 2024, 2025
• FLHXST Street Glide ST 2024
• FLTRK Road Glide Limited 2024, 2025
• FLTRKSE CVO Road Glide Limited 2023
• FLTRX Road Glide 2024, 2025
• FLTRXSE CVO Road Glide 2023, 2024, 2025
• FLTRXST Road Glide ST 2024
• FLTRXSTSE CVO Road Glide ST 2024, 2025
• FLHC Heritage Classic 117 2025
• FLHXU Street Glide Ultra 2025
• FLTRXRRSE CVO Road Glide RR 2025
• FXBR Breakout 117 2025
• FXLRS Low Rider S 117 2025
• FXLRST Low Rider ST 117 2025
• RA1250 Pan America 1250 2025
• RA1250S Pan America 1250 Special 2025
• RA1250S Pan America Special 2025
• RA1250SE CVO Pan America 2025
• RA1250SE CVO Pan America 1250 2025
• RA1250ST Pan America 1250 ST 2025
• RH1250S Sportster S 2025
• RH975 Nightster 2025
• FLFB Fat Boy 117 2025
• FXBB Street Bob 117 2025