ThunderMax for 2004 - 2011 Dyna® Models

ThunderMax ECM: The Ultimate Performance Upgrade for EFI Harley Davidson® Dyna Motorcycles

What is ThunderMax ECM?

ThunderMax ECM is an industry award-winning performance engine control module (ECM) specifically designed for EFI-equipped Harley Davidson® motorcycles. This highly advanced tuning system utilizes AutoTune technology paired with wide-band oxygen sensors to deliver unmatched performance and rideability. ThunderMax offers riders a powerful and hassle-free way to optimize their bike's fuel management system.

Key Features of ThunderMax ECM:

• AutoTune Technology for continuous, automatic fuel adjustments
• Wide-band oxygen sensors for precise air-fuel ratio management
• Pre-assembled and ready to install with no wire cutting or splicing
• Real-time feedback to the ECM for seamless engine performance
• Fully adjustable tuning through ThunderMax software or using a basemap

Easy Installation: No Wiring or Splicing Required

ThunderMax ECM comes 100% pre-assembled, allowing for quick and easy installation. It’s designed to replace the factory ECM and oxygen sensors in your EFI Harley Davidson® motorcycle with minimal effort. Simply remove the old components, install the new ThunderMax ECM and oxygen sensors, load a map (or use the pre-loaded basemap), and you're ready to ride.

ThunderMax Installation Steps:

1. Remove the stock ECM and oxygen sensors.
2. Install ThunderMax ECM and wide-band oxygen sensors.
3. Load your chosen map or use the pre-programmed basemap.
4. Enjoy your ride with a smoother, more responsive engine.

AutoTune Technology: Real-Time Fueling Adjustments for Optimized Performance

One of ThunderMax's standout features is its AutoTune technology, which continuously monitors and adjusts your engine’s air-fuel ratio to optimize performance. This system ensures your Harley Davidson® runs smoothly, regardless of RPM or throttle position.

How ThunderMax AutoTune Works:

• Real-time automatic fueling adjustments: Every 256 RPM and every degree-and-a-half of throttle are monitored and adjusted for the best possible engine performance.
• Wide-band O2 sensors: These sensors constantly monitor the air-fuel ratio, sending live feedback to the ECM for on-the-fly adjustments.
• Barometric sensor: Automatically compensates for changes in ambient air pressure so you don’t have to worry about weather or altitude.

With ThunderMax, you never have to worry about tuning your bike manually—fueling adjustments happen automatically as you ride.

Fully Adjustable Tuning: Customize Your Ride with ThunderMax Software

The ThunderMax ECM is not just about automatic adjustments. It’s also fully adjustable with ThunderMax tuning software, giving you complete control over your bike’s fueling, throttle response, and more. Whether you want to fine-tune your settings or rely on the pre-loaded basemap, the choice is yours.

ThunderMax Tuning Options:

• ThunderMax tuning software: Adjust fuel settings, throttle response, and more for a completely customized riding experience.
• Pre-loaded basemap: For quick and easy setup with automatic adjustments.
• Real-time tuning: Adjust settings as you ride for the ultimate in personalized engine performance.

Why Choose ThunderMax ECM for Your Harley Davidson®?

ThunderMax ECM is designed to unlock the full potential of your EFI-equipped Harley Davidson® by providing precision tuning, improved throttle response, and optimized fuel efficiency. Whether you're a casual rider or a performance enthusiast, ThunderMax delivers a smoother, more powerful ride with less hassle.

Benefits of Upgrading to ThunderMax ECM:

• Improved throttle response for better control and smoother acceleration
• Automatic air-fuel ratio adjustments for optimal engine performance
• Simple installation with no splicing or wire-cutting
• Customizable tuning options to match your riding style
• Enhanced rideability and better fuel efficiency for a more enjoyable experience

Upgrade your Harley Davidson® with ThunderMax ECM today and experience the next level of performance tuning. Whether you’re cruising on the open road or navigating city streets, ThunderMax ensures your motorcycle runs at its best with automatic, real-time fuel adjustments that adapt to your riding conditions.

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