The devices that halve the speed readings etc Badass box peartune etc only do so while they are connected ,
On shimano the peartune is activated by the lights function to switch on and off , switch it off and all your data is correct including the odometer . Nothing is effected Permanently and it’s use can’t be detected after removal so no worries that it could effect warranty
On shimano the peartune is activated by the lights function to switch on and off , switch it off and all your data is correct including the odometer . Nothing is effected Permanently and it’s use can’t be detected after removal so no worries that it could effect warranty