Up until 3 days ago, there was no sound from my Forge, but now that I have the BR filter, it's a loud ass BOV. I would have to get someone to record the noise while driving, so that may not happen soon, or maybe it will. One of my local DcEvoClub buddies is putting together an education set of vids for all our local noobs who keep asking all sorts of questions about the stuff I do (e.g. 2-step launch), so he wants to get together and vid a bunch of features I use on my Evo and how I use them. I could probably have him record a purge while driving...