10 perfect powercom new powercom system i controls electronic throttle or ... this system utilizes narrow band o2 and isideal for those running the following ... 66103 perfect powercom system i ls1 w/mechanical throttle 66104 ... perfect powercom system i ls1 w/electronic throttle 66105 ... perfect powercom system i ls2 new powercom system ii controls ... o2 control there are two control unitsin these kits one for engine management ... 66203 perfect powercom system ii ls1 w/mechanical throttle 66204 ... perfect powercom system ii ls1 w/electronic throttle 66205 ... perfect powercom system ii ls2 new powercom etc the transmission ...