mine lasted about 6 months ive got a new one coming over frm the states now
i do have a bov but ive got it adjusted as tight as can be
dunno if it was the cause of it or not but i dont realli care, ive always used a BOV on all my cars because i tend to run over 20psi with all my cars i just adjust them as tight as they can go and if the turbo dies it dies i'll get it rebuilt or ill replace it