ThunderMax Z309-485 ThunderMax w/AutoTune for Dyna 04-11/Sportster 10-13/Rocker 08-10ThunderMax 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 rideability. 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
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ThunderMax Z309-485 ThunderMax w/AutoTune for Dyna 04-11/Sportster 10-13/Rocker 08-10