No it will not work.
Your AFM measures how much air is going into the engine, the ecu then uses that measuement of air going in to work out hom much fuel put in.
When you put on a BOV that vents air back to atmosphere (makes thats loud pschhh) your computer (thinking the air is still in the engine) puts in way too much fuel. This results in stalling, stuttering, big black exhaust smoke and a generally shithouse driving experience.
A 50/50 BOV still dumps 50% of the air that the ecu expects, so it still causes a problem. Just leave it stock FFS!
*On a side note I changed my spark plugs on the weekend and forgot to put the BOV return pipe back on, as i changed gears i got the atmo bov noise. But it made the car feel so sluggish on gear changes, spat so much black smoke I cant imagine how anyone could deal with that just for a little ghey sound*