Let my front BOV VTA. Still working on the back one. I just pulled the hose off the BOV, stuffed a 1/2" PVC cap in the end of the hose and put the clamp back over it to seal the intake side. Tomorrow I want to try to get the other one done and drill a 2" hole in the air box to see what that does for turbo sound. I miss the sound effects from my WRX.