Bought to replace a torn Bosch valve. Immensely improved throttle response and holds boost much better. Car felt much stronger, and due the extremely fast dumping action accelerating through the gears was far smoother and quicker. With the Open Air Intake this valve makes NO 'hoot' sound (like the Bosch). The valve is gorgeous, polished stainless steel. Much larger and stronger than the flimsy old valve. When oriented the opposite of the factory direction the Forge makes a loud dump noise like two swords hitting each other. Money well spent, I won't run anything but a Forge valve in a turbocharged car.

Rating: [5 of 5 Stars!]