ThunderMax ECM with Auto Tune for 2025 Harley Softail

Product Description

ThunderMax ECM with Auto Tune for 2025 Harley Softail

Simple, easy, bolt-on tuning kit for your Harley Softail. 

Fits: 2025 Harley Softail Models

• ThunderMax ECM with Auto-Tune module mounts conveniently in place of the factory ECM and plugs in to the existing harness
• 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
• Easy installation: replace the factory ECM, install new oxygen sensors and harness, load the correct map for your bike, and ride
• 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
• Improves throttle response, exhaust sound and driveability
• Rider can adjust idle speed, rev limit and speedometer calibration
• Adjustable front and rear cylinder AFR maps, ignition timing (spark) maps, and startup map
• Works with all popular exhaust systems and is compatible with high-performance camshafts
• Supports turbo, nitrous and supercharger applications
• Software program allows live monitoring, recording and examination of diagnostic codes and datalogs including number of starts, engine temperature and rpm operation
• New maps, software, firmware updates, map analysis and tech support available online at no charge
• Made in the USA

NOTES:

• Because of possible clearance issues, some aftermarket exhaust systems may require modifications or relocation of their O2 sensor port bungs.
• Does not require dyno tuning.

FUEL TUNERS ARE NOT ELIGIBLE FOR RETURN OR EXCHANGE IF THE RETAIL PACKAGE HAS BEEN OPENED. WE CAN ONLY ACCEPT RETURNS OR EXCHANGES IF THE PRODUCT IS BRAND NEW AND STILL FACTORY SEALED IN ITS ORIGINAL RETAIL PACKAGING.