08-13 Harley Davidson Bagger ECM and Auto-Tuner by ThunderMax Performance. The Ultimate EFI Upgrade.

Enhance Your Harley Davidson® with ThunderMax ECM

ThunderMax is an award-winning performance ECM designed exclusively for EFI-equipped Harley Davidson® motorcycles. This advanced, stand-alone tuning system leverages AutoTune technology and wide-band oxygen sensors to deliver exceptional performance, smooth rideability, and precise control. Whether you're looking to boost power or improve engine efficiency, ThunderMax provides a seamless upgrade with no complicated installation.

Key Features of ThunderMax ECM for Harley Davidson®

Effortless Installation with No Wiring Modifications

ThunderMax comes 100% assembled and is ready for installation out of the box. Simply replace your stock ECM and oxygen sensors with ThunderMax, load your custom or pre-configured map, and you're ready to ride. With no wire cutting or splicing required, ThunderMax is a hassle-free performance solution that anyone can install.

Precision Fueling with AutoTune Technology

ThunderMax's AutoTune technology ensures your bike's fueling is optimized for performance in real-time. Every 1.5 degrees of throttle and every 256 RPM is automatically adjusted, resulting in smoother engine operation and greater control. Thanks to the wide-band O2 sensors, ThunderMax continuously reads and adjusts the air-fuel ratio, ensuring your engine performs flawlessly under all riding conditions.

Barometric Sensor for Consistent Performance

The built-in barometric sensor automatically compensates for changes in ambient air pressure, allowing your Harley to maintain consistent fueling adjustments regardless of elevation or weather conditions. This intelligent feature takes the guesswork out of tuning and ensures your bike runs optimally no matter where the ride takes you.

Advanced Tuning and Customization with ThunderMax Software

Fully Adjustable with ThunderMax Tuning Software

With ThunderMax tuning software, you have the ability to fully customize the ECM to suit your riding style and preferences. The software offers detailed adjustments to fine-tune your Harley’s performance, ensuring the highest level of precision and control. Whether you're a professional tuner or a DIY enthusiast, ThunderMax gives you the flexibility to perfect your bike’s fuel map.

Quick Setup with Pre-Configured Basemap

If you prefer a more straightforward approach, ThunderMax allows you to use a pre-configured basemap for quick and easy setup. This option allows you to experience improved performance without the need for advanced tuning. However, you can always make adjustments later as you learn more about your bike’s needs.

Why Choose ThunderMax for Your Harley Davidson®?

ThunderMax is the ideal performance ECM for riders seeking unmatched performance, easy installation, and advanced fuel control. With features like AutoTune technology, wide-band O2 sensors, and barometric compensation, ThunderMax offers a hassle-free and reliable solution for improving your Harley Davidson®’s performance.

Installation Instructions

Part Number: 309-362

Fitment:

2011–2013 FLTRU Road Glide Ultra
2011–2013 FLTRX Road Glide Custom
2010–2013 FLHTK Electra Glide Ultra Limited
2010–2011 FLHXXX Street Glide Trike
2009–2013 FLHTCUTG Tri Glide Ultra
2008–2013 FLHR Road King
2008–2013 FLHRC Road King Classic
2008–2013 FLHTC Electra Glide Classic
2008–2013 FLHTCU Electra Glide Ultra Classic
2008–2013 FLHX Street Glide
2008–2010 FLTR Road Glide
2008–2009 FLHT Electra Glide Standard