Ummmmm wheres Injen???? I have the Injen and I LOVE IT!!! I created an air induction system with use of an additional G35 Intake Tube (it was the right curvature for what I was designing, and it is QUITE the addition. Comes from the brake vent (bottom of tube) right on up to the engine bay compartment almost directly into the Injen intake filter.. HUGE gains as far as im concerned, the feel is increadible.