not really, but its funny, your mate and yourself are driving around making these stupid noises that sound like "whaaaaa hey cops I'm over here giving skylines a bad name psshhhhhhh". Therefore, you'll get pulled up and booked for something as stupid as that, while driving around with less than 200rwkw, meanwhile, I'm driving around with over 300rwkw, silently, not attracting any attention.. But then again, I'll most likely get pulled up because people with standard skylines that only buy them so they can go "wwwhhhaaI'mapoofsshhhhhhh" have given the skyline a bad name in general.
oh and one other thing - Putting a Vent to atmosphere BOV on a air flow metered car is f**king stupid, because its just as bad as just cutting a big hole in your intercooler. Vent to Atmosphere BOVs on a AFM car are a big air leak, and it wasn't designed to be that way, its general common sense. If you use one, you're either an idiot trying to attract attention, or you've changed to a MAP sensor and are running som massive horse power.
Trust me, there is not other option there. You either need one or you don't need one, and if you don't need one, then you just want attention - and I hope the cops give you as much attention as you want.
/bov-rant
PS. People that say they put them on because they like the sound - thats bullshit. Its because they want people to know they have a Turbo'd car, and they think it will make them popular.
Me, I don't give a f**k about sound, or what anyone else thinks, I just want it to go fast....and it does..