many methods has been tested....
1.air press - doest wor
2.Move side mirror - doesnt work
some might say it work, but im sure its just psychological effect... thinking that with the amount of money spent to buy those things, it should have some effect....happen to all my MOVE frens... cos after a while, they'd say they sound comes back...whats with that?!?!?!?
however, i remember a friend of mine saying, he works for perodua and he went to japan and had a chat with some daihatsu engineer... for those Japanese customer who complain about those sound, what they did is they fill up the A-pillar with some special foam... this foam will prevent air from coming in which causes the hollow sound....