The sound from my AEM CAI was pretty cool, like a lil whistle, very annoying at the right RPM, no one will really notice the sound but you, makes your car "feel" faster. In reality an intake will not increase your performance in almost any way [~1% lol]

Mainly when you go WOT you just get a lil more of a manly sound from the bay haha, its still a lil tiny honda engine but its better. It isn't like putting a fart can or anything, at all.

 

If you want to preview that sound yourself, just disconnect the stock air hose from the filter box and take a short test drive. Don't get into any dust because you have no air filter.