lol the blow off valve is neccessary for any car with a turbo, whether sequential or standard, blitz, hks, greddy, etc... without it the backpressure cannot be relieved from the engine when the throttle is lifted, and the engine can go BOOOOM!!!! I see what he means, a BOV effect helps make it more realistic, but why people put turbos on hondas, I'll never know, it's like putting a playstation 3 or xbox360, on a 13 inch TV.... the turbos probably cost more then the honda does xD