my car is a 94 e320 center vent difuser is only about 1/4 apart cant get
1/2 dowel in there.
How far inside am i going to feel resistance of flapper?
Should I place wood in left or right vent?
in prior post guy talkes about removing flapper so air is controied by vent air valve Is this really possible and if so how is this completed.
thanks

hal