In my old S14, ran no BOV, came out of a round-a-bout one night and shifted gears, cop heard the flutter and pulled me over.. Basically said he heard my BOV, but after explaining it was removed and wasnt running a BOV at all he just left it at that.
Each copper will be different, if they want to defect you, they can and will. Treat them with respect and they may just leave you be.
My 2cents..