For me the problem is more complicated because Berta is diesel and fitted with IC. So I need to have an opening for IC for all the time, maybe it would help a bit for faster warm up with closed air duct for IC during winter, but I don't think that gain will be measureable. Anyway I want to have one opening for IC and radiator with ability to restrict air flow through radiator. See the pic. Any ideas how I could manage that with the auto shutter setup?
