This BOV is not recilculating and maybe this is not the best solution. Vhen you lift pedal, it will make some nice noises, but air blowed out of bov dont go ower MAS so engine will add some fuel and if you flor it again, it wil blow black from exhaust and maybe will angine hesistate for second.
If you read the description for the unit, it states it can be made to recirculate the air.
Also the i30N has no MAF. Uses MAP so wont have any issues. Forge test their products so have found that a venting BOV works well. I'd trust them