I disagree with most of this OP as bad technical advise and have explained so in the thread. I didn't sticky it for a reason and if you want to request stickies in the future, please pm me rather that discussing it here.
Hybrid BOV's IMHO are the worst of both worlds, not the best. First off they are unnessisary. Second, they're illegal. Third, they are more sensitive and need to be adjusted more carefully to work properly. They are much more likely to be improperly installed and cause more problems even than a straight atmospheric.
2015 STi: Still Stock
04 STi, 04 WRX: SOLD