Fitment - 2016-2017 Softails with 18mm O2 Sensors
also works with:
2014-2015 CVO Softails
2016-2017 Dyna Low Rider S

2 wide-band Bosch 5-wire oxygen sensors (18 mm) with AutoTune connection harness. ThunderMax quick start easy install and printable comprehensive user’s manual
No Dyno required - automatically tunes for riding style and riding conditions

ThunderMax performance engine control module (ECM)

100% engineered and made in the USA
Easy to install and simple to use

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 rideability. ThunderMax comes 100% assembled, ready to install with no wire-cutting or splicing.