hi guys...im having some questions regarding the sheepdog bov on my car
i dont know whether it installed correctly or not

cause i heard most of the car that using sheepdog bov having the flutter sound this is how my bov sounds like :
http://www.youtube.com/watch?v=SgWVbl6Rjtk
im running on 0.5bar, or i have to increase the boost ?
Thanks in advance =D