I was trying to test my SAD off the car last night. I had it connected to 12V for about 35 minutes - it was almost closed but not completely. I could still see a little bit of light getting through when I look down the inlet and I could also blow air through from one side to the other.
Should it have closed in that time with just a 12v supply to it and no heat from the engine to help close it? I have already cleaned it with carb cleaner so its like new inside.