A blow-off valve, in short, allows the turbocharger in a turbocharged engine (forced induction, the pushing of air into the intake) to relieve pressure inside the turbo. Normally this pressure is vented back into the intake, but sometimes it’s sent out into the atmosphere as a noise maker. Some think it sounds cool, and I’m one of those people… Too bad it’s apparently illegal. Note that I think this is cool for high end use, not for you and your turbo civic or jetta. Humbug!
So what happens when someone stuffs a duck call on the end of valve, and that valve opens and vents pressure? You’ll have to watch below, I had a hell of a good laugh with this. Apparently so did variable! Courtesy of MDK!
Or on a Scooby:
How about a turkey call:
Ahh, much laughter to be had. And I don’t even want to know how deep related videos go.
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