ThunderMax ECM for Harley Davidson®: Unmatched Performance and Rideability

What is ThunderMax ECM?

The ThunderMax ECM is an award-winning engine control module specifically designed for EFI-equipped Harley Davidson® motorcycles. This advanced, stand-alone tuning system utilizes AutoTune technology along with wide-band oxygen sensors to deliver exceptional engine performance, smooth throttle response, and improved rideability. Whether you're a casual rider or a performance enthusiast, ThunderMax provides unmatched control over your bike’s fuel management, ensuring optimal power and efficiency.

Key Features of ThunderMax ECM:

• AutoTune technology for automatic fueling adjustments.
• Wide-band oxygen sensors for precise air-fuel ratio control.
• Plug-and-play installation with no need for wire-cutting or splicing.
• Fully assembled and ready to install out of the box.
• Real-time fueling adjustments for smoother engine performance.

Easy Installation: Plug-and-Play for EFI Harley Davidson® Motorcycles

One of the standout features of ThunderMax ECM is its easy installation. Unlike other aftermarket ECMs that may require wire-cutting or splicing, the ThunderMax ECM comes fully assembled and is ready to be installed with minimal effort. Simply remove the factory ECM and oxygen sensors, replace them with the ThunderMax system, and load your map or use the pre-loaded basemap.

Step-by-Step Installation:

1. Remove the factory ECM and oxygen sensors.
2. Install the ThunderMax ECM and wide-band O2 sensors.
3. Load the appropriate map or use the pre-loaded basemap.
4. Start your engine and enjoy the instant performance boost.

No modifications, no hassle—just a quick and easy installation to upgrade your bike’s performance.

AutoTune Technology: Real-Time Adjustments for Maximum Performance

ThunderMax ECM is equipped with AutoTune technology that continually adjusts your air-fuel ratio in real time. As you ride, the wide-band oxygen sensors monitor your bike’s performance, adjusting the fueling at every 256 RPM and every 1.5-degree throttle increment. This results in smoother acceleration, better throttle response, and an overall more refined riding experience.

How AutoTune Enhances Performance:

• Constant fueling adjustments at every 256 RPM and throttle position.
• Real-time monitoring via wide-band oxygen sensors.
• Built-in barometric sensor automatically compensates for changes in altitude and weather conditions.
• No need to "accept" changes—once you key off, the adjustments are permanently written to the system.

With ThunderMax AutoTune, you get a smoother-running engine that adapts automatically to changing conditions, ensuring consistent performance every time you ride.

Fully Adjustable with ThunderMax Tuning Software

While the ThunderMax ECM works flawlessly with the pre-loaded basemap, it also offers the flexibility of custom tuning. Using the ThunderMax tuning software, you can adjust the fueling, throttle response, and other performance parameters to match your specific needs. Whether you're tuning for maximum power, smooth cruising, or fuel efficiency, ThunderMax puts the power in your hands.

ThunderMax Tuning Software Features:

• Real-time adjustments for a personalized tuning experience.
• Adjust fueling, throttle response, and other engine parameters.
• Custom maps for different riding styles and conditions.
• Intuitive interface for easy tuning even for beginners.

ThunderMax gives you the freedom to fine-tune your bike for a truly personalized ride. You can opt for the simplicity of the basemap or take control with advanced adjustments.

Why Choose ThunderMax ECM for Your Harley Davidson®?

When it comes to EFI-equipped Harley Davidson® motorcycles, ThunderMax ECM is the ultimate performance upgrade. Whether you’re looking for better throttle response, smoother rideability, or more precise fueling adjustments, ThunderMax delivers a significant improvement. With its AutoTune technology, wide-band oxygen sensors, and adjustable features, ThunderMax offers unbeatable performance, ease of installation, and complete control over your engine’s performance.

Benefits of ThunderMax ECM:

• Improved engine performance with real-time fueling adjustments.
• Smoother throttle response and enhanced rideability.
• Simple plug-and-play installation with no wire-cutting.
• Customizable tuning options with ThunderMax software.
• Automatic adjustments for weather and altitude changes.

Upgrade Your Harley Davidson® with ThunderMax ECM Today

Take your Harley Davidson® to the next level with ThunderMax ECM. Whether you want more power, smoother acceleration, or better fuel efficiency, ThunderMax provides the tools you need to unlock your bike’s full potential. With easy installation, real-time auto-tuning, and customizable tuning options, ThunderMax is the best choice for anyone looking to enhance their EFI Harley Davidson® motorcycle.

Upgrade now and experience a smoother, more powerful ride with ThunderMax ECM!

Installation Instructions

Emissions Notice

This product is intended for "RACE READY" vehicles only and is not for sale or use on vehicles otherwise subject to emission control requirements.  In the state of California, this product should not be used on any vehicle that is registered for use on public roads. Please view the ThunderMax 50 application guide for "STREET APPROVED" & ARB compliant products.

Part Number: 309-485