Actually no. A BOV smoothes out a turbo while on-and-off the throttle. What happens is while you are on the throttle and the turbo is adding boost, the valve remains closed and the turbo pumps air into the engine normally. Without the BOV, and the throttle is suddenly closed, the turbo will be trying to pump air against a closed throttle plate. This creates a pressure spike in the turbo output and sends a pressure "wave" crashing back and forth between the throttle plate and the turbo compressor blades. This pressure spike quickly slows down the turbo and the pressure wave can actually damage the turbo. This phenomenon is not quite as drastic on intercooled engines but it is still present. When the throttle is opened again, the turbo has to spin up again ( which creates turbo lag ). If a BOV is present, the BOV will open as soon as the throttle is closed, releasing the pressure spike away from the turbo and avoiding the pressure wave phenomena.
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does a blow off valve increase HP on my 97 toyota supra?
Linear Mode
