quick demonstration to provide the exact noise you can expect with an older discontinued Greddy type S blow off valve. This valve is famous from the Fast and The Furious cars and is my absolute favorite bov sound ever.
prone to boost leaks, I replaced the diaphragm with an nrg Greddy style diaphragm which was much better made. fits perfectly and is very loud!

Car is a B18c1 integra with Turbonetics t3 turbo.

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