Ummm also I thought that without a BOV venting the pressure when it does, that pressure goes back down and causes your turbo to effectively "cut" the air, where is spins forward then reveres then forward again, producing that horrible "flutter" noise which is popular with ricers.
BOV are there for a purpose, I would think long and hard about leaving it off. Also do a bit of searching abut this subject, it has been discussed lots of times, mainly in the Forced Induction section.
Just reading that you guys have "blocked off" where the BOV used to me sent shivvers down my spine..................