THUNDERMAX Engine Control Module Kit with Integral Auto Tune Harley Davidson FLSB / FLHC / FXST / FXLRS 1750-1923cc 21-24

Features:

• Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates
• Hundreds of maps available to download for your bike (based on model, engine size, exhaust system air cleaner, pistons, cams, etc.) - load the map of your choice and the integral auto-tune will do the rest
• Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation
• Utilizes wide-band oxygen sensors and works as a closed-loop control system to continuously self-adjust and properly tune the motorcycle's air/fuel ratio for all riding conditions
• ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness
• Easy installation: replace the factory ECM, install new oxygen sensors and harness, load the correct map for your bike, and ride
• New maps, software, firmware updates, map analysis and tech support available online at no charge
• Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup maps
• Works with all popular exhaust systems and is compatible with high-performance camshafts
• Rider can adjust idle speed, rev limit and speedometer calibration
• Improves throttle response, exhaust sound and driveability
• Supports turbo, nitrous and supercharger applications
• Does not require dyno tuning
• Made in the USA

Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their oxygen sensor port bungs.
Fit the models: