*CALIFORNIA CUSTOMERS MUST SIGN AND RETURN THE WAIVER FORM BEFORE WE CAN BUILD AND DELIVER THE EXHAUST SYSTEM* CALL US FOR MORE DETAILS: (817) 834-8961
ThunderMax is an industry award winning, performance ECM designed specifically for EFI equipped Harley Davidson motorcycles. This highly advanced stand alone tuning system utilizes proprietary AutoTune technology with wide-band oxygen sensors to deliver unmatched performance and ride ability. ThunderMax comes 100% assembled, ready to install with no wire-cutting or splicing required. Simply replace the factory ECM and oxygen sensors, load a map, and enjoy your new ride!