Quote: Originally Posted by
pancit175 
My first reaction with this problem is to ask this question: Are any wires or cables that are run around the area where the trunk lid's arms or torsion bars are traveling where there is a possibility of being pulled, pinched or grounded?
At first glance I dont think it has to do with the amount of air-flow available because of the collateral effect to your interior speakers.
Im 100% sure there are no wires around the trunk lid.
The only reason I think its air flow related it because having the trunk lid open with plenty of air flow, works perfectly, absoloutly no problems. After I close it, the sounds begins to get distorted...
As for the air intake hole on the sub box, most boxes have them, its a small hold on the side to let air either in or out...