Think i may have seen your car around leixlip area, im around there, in work tonight and off rest of the week, i have a standard B4 with that BOV fitted, bought off Nengun too.
Ill PM you my mobile and can compare like for like.
Rev the engine from under the bonnet(I presume ya know how) and put your hand in front of the BOV, ya should be able to feel the air coming out of it after ya rev it. Thats what happens with my SSQV...