I have a set of emi's on my boat, and it doesnt have silent choice or anything, and after riding in my buddies boat this weekend with silent choice, ill be honest its nice to swtich the exhaust to be quiet when idleing around past water patrol, esp at lake of the ozarks..(they will pull ya over for any reason they can) But, I would have to put a set of switchable clamp on mufflers, does anyone have a video of them and how they look and sound?? I still want to have them open when Im running, but I also want to run it at night when I have them closed..again..water patrol issue..