I wouldnt think so. Have you tried just adjusting the screw on the end? the more you screw it in, the harder it will be for the bov to open, for more boost.
if its further out, its easier to open, normally for lower boost or to stop/prevent compressor surge.

i'll take pics of where mine are hooked up tomorrow. if you can get pic messages, pm your number and i'll send em to you.