2 wide-band Bosch 5-wire oxygen sensors (18 mm) with AutoTune connection harness ThunderMax quick start easy install and printable comprehensive userÆs manual Never outgrow it - easily accomodates bike change 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. ECM AUTOTUNE 21- TOUR
