the cogged belt idea... i never heard off until you said it... i googled it lol. and from the few things i could find... it is'nt really used. and hurts your s/c. and right now i have the cheap cone from autozone. so i guess i'll get a bigger cone to see if it changes the sound any. and my pulley size is a 3.4 and i want to get a downpipe/Plogg before i consider dropping to a 3.2... and i wouldn't be surprised if there was a video of that! lol, i might check youtube.