THUNDERMAX EFI SYSTEM. PN#309-563. APPLICATIONS; 2016 - 2017 Dyna® Lowrider S (Throttle-by-Wire). 2016 - 2017 Softail® Models (Throttle-by-Wire). 2014 - 2015 CVO Softail® Models (Throttle-by-Wire). EXHAUST NOTE; 18MM LAMBDA SONDE
