gizgrey

have recently fitted an apexi ind filter doing away with airbox,the mounting braket was missing when fitted,i am getting a loud wailing noise coming from it when going on boost very strange,not the usuall ind noise from kits fitted to previous imprezas,have made up a bracket because i thought it might be some sort of vibration but still does it,has anyone had similiar probs on theres,its a 98 wagon turbo 2000.