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So I've been having some issue's with my valve on my Meistershaft (GTHaus) exhaust, basically it rusted and seized on me. The shop where I do all of my showed me a product that I couldn't pass on. Ive never heard of the company but so far I love the new valve, its what the exhaust should have shipped with. The name of the company is ArmaSpeed, I attached some pics of the old and the new valve and what the app allows me to do. Basically I can program the exhaust to open when I floor it or it hits a certain speed, exactly what some German vehicles do. Gears in old valve system Old Valve system New valve system New valve and old valve. New App for the New vacuum valve