Just a few quick questions, was about to spend some cash on a cai but after reading a few posts I can see the idea of cutting a hole in the standard box seems more the go. Its free so why the hell waste cash. Just wondering wats the downside? Im assuming u dont get the small power gain u do from a cai? Do u still get a bit of extra sound? I guess I want a cai coz its a cheap n easy diy project but if its a waste of cash I'll leave it