I bought a Stealth FX BOV which is plumb back but also has a removable trumpet on it. These are supposed to be legal as far as I know.
Anyway a cop pulled me up and I had to pop the bonnet, took a look and said that the BOV was a defect because it was atmo. I unscrewed the trumpet and said, nah now it's plumb back and he goes, oh, ok... no defect.
Mind you this cop wasn't too bright, he pointed at my intercooler and asked what it was, decided to try something I've heard another person did and informed him that I think it's an air conditioning condensor... He goes, alright then...
So I suppose it depends on the cop, this guy obviously needed to brush up on his mechanical knowledge
Oh, and he didn't even look at the pod...