[CapellaGTS]

OK well i have an 1.8 capella gts c2 (mx6) RHD. ive got a k&n drop in air filter but it doesnt make the noise im after (ie no induction noise at all) some people have had gains from cutting a hole in the bottom of the airbox but some have lost power. if i cut a hole will i get a loud roaring induction sound? if i cut the hole and reset the ecu to accompany the breathing changes will this guarantee success with noise/power? how do i reset the ecu? is it simply disconnecting the battery and reconnecting?
sorry bout all the questions but any help is much appreciated
:-D

p.s. non turbo efi 1.8 12v sohc