They are not - even VTA-ing your OEM BPV will fail you on visual inspection here (unless you know a guy like apparently some people do). Just make sure to keep your OEM setup so you can revert to stock every 2 years, as long as you don't get too crazy it doesn't take long to switch back to OEM for the emissions inspection.im new and its my first time posting go easy on me lol. just wanted to ask cause i dont see a clear answer on google. Are Gen 1 bov not legal in CA, i just got a 2015 VT, i dont wanna get one now but im just curious cause in the future i probably will want one, does anyone know which one to get and if they are legal in CA