2001 - 2010 Harley Davidson Softail Tuner by ThunderMax ECM: The Ultimate Performance Upgrade.

What is ThunderMax ECM?

ThunderMax ECM is an award-winning performance engine control module designed specifically for EFI-equipped Harley Davidson® motorcycles. This stand-alone tuning system uses proprietary AutoTune technology combined with wide-band oxygen sensors to deliver exceptional performance and unmatched rideability. With ThunderMax, you can instantly enhance your bike’s throttle response, fuel efficiency, and overall engine smoothness.

Key Features of ThunderMax ECM:

• Award-winning performance and advanced tuning technology
• AutoTune technology for automatic, real-time fuel adjustments
• Wide-band oxygen sensors for precise air-fuel ratio management
• No wire-cutting or splicing required for installation
• Fully assembled and ready to install for easy setup

Easy Installation for Immediate Performance Gains

ThunderMax ECM comes 100% assembled, so you can start enjoying enhanced performance right away. There's no need for complicated wiring, wire-cutting, or splicing—just replace your factory ECM and oxygen sensors, load your map, and hit the road with a smoother, more responsive ride.

How to Install ThunderMax ECM:

1. Remove the factory ECM and oxygen sensors from your bike.
2. Install the ThunderMax ECM and wide-band oxygen sensors.
3. Load your preferred map (or use the pre-loaded basemap) for automatic tuning.
4. Enjoy a smoother, more powerful ride with no hassle.

AutoTune Technology for Precise Fuel Management

ThunderMax ECM uses AutoTune technology to automatically adjust fueling every 256 RPM and at every degree and a half of throttle. This ensures smooth throttle response and consistent engine performance, no matter the riding conditions.

The barometric sensor built into the system constantly adjusts for ambient air pressure changes, allowing you to ride confidently without worrying about altitude or weather changes. Additionally, the wide-band oxygen sensors provide live, real-time feedback to the ECM, making sure your bike is always running at peak performance.

ThunderMax ECM Benefits:

• Automatic fueling adjustments at every 256 RPM for smoother engine operation
• Real-time feedback from wide-band O2 sensors ensures optimal air-fuel ratio
• Barometric sensor adapts the system to changes in weather or altitude automatically
• No manual confirmation needed—once you turn off the ignition, the changes are saved

Fully Adjustable for Custom Performance Tuning

ThunderMax ECM is designed to be fully adjustable, allowing you to fine-tune your bike’s performance to match your riding style. Whether you’re a seasoned pro who wants complete control over your bike's settings or a beginner looking for an easy upgrade, ThunderMax offers both advanced tuning software for detailed customization and the option to load a basemap for instant optimization.

Customization Options with ThunderMax ECM:

• Fully adjustable using ThunderMax tuning software for advanced riders
• Pre-loaded basemaps for quick setup and automatic tuning
• Complete control over your bike’s air-fuel ratio and engine performance

ThunderMax ECM: A Perfect Upgrade for Your Harley Davidson®

ThunderMax ECM is the ideal performance upgrade for your EFI-equipped Harley Davidson® motorcycle, delivering the best of both worlds: effortless installation and customizable tuning. Whether you’re looking for improved engine smoothness, better fuel efficiency, or enhanced throttle control, ThunderMax ensures you get the best performance possible.

Why Choose ThunderMax ECM?

• Enhanced throttle response for a more enjoyable ride
• Smooth, consistent engine performance under all conditions
• Quick and easy installation with no cutting or splicing
• Customizable to fit your personal riding preferences

Upgrade your ride today with the ThunderMax ECM and experience the ultimate in engine control, performance tuning, and rideability for your Harley Davidson® motorcycle.

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: 309-460