Proprietary Autotune technology: Delivers real-time, closed-loop air-fuel ratio adjustment for optimal engine performance
Fully assembled with wideband O2 sensors and plug-in harness: Enables straightforward installation with no wire cutting or splicing
Supports factory functions: Maintains all original Harley conveniences while allowing advanced tuning options
USB communication cable included: Facilitates easy software updates and diagnostics
Robust data collection and diagnostic capabilities: Allows riders to monitor and analyze critical engine metrics for deeper performance insight
Summarized by Shop
Part Number: 309-460
ThunderMax is a performance-driven, award-winning ECM built exclusively for EFI-equipped Harley-Davidson® motorcycles. Designed as a stand-alone replacement for the factory ECM, the 309-460 arrives fully assembled with wide-band oxygen sensors, plug-in harness, AutoTune module, USB communication cable, and everythin