I don't know if it's just me or not. I have had the injen sri installed for about 2 months now and I have had the diy bov mod (removed hose and capped off intake) as well. I recently reinstalled the hose and feel as if the car has more power. I have read other threads about this topic and it seems that most people do not see a performance difference with or without the hose. What do you guys/gals think? Also a note is that I use premium gas and don't mix.