I was at the car wash this weekend and saw some young ricers with a cone filter in place of the stock air box. Now I mean there was no hose just directly off the Throttle body was a cone filter. I

when I saw it...and when the kid crunk up the car it was freakin loud and sounded like a blow off valve...kinda...when he took off out the parking lot

. Since then I have seen pics on the internet like this as well. Wondering if anyone else has seen this.