I didn't expect this to allow such sound! I think my MPG have dropped because I'm constantly wanting to hear the turbo spool. I love the BPV noises as well. Best $80 I've spent on the car yet. I found it gets in the way of the marker light when I bolt it in place, so I just have it hanging over there until I figure something else out. Love it though!

Rating: [4 of 5 Stars!]