Sportbikes.net - View Single Post - SET Valve Mod Question K6-K7-K8 600/750 (Updated w/K5-K6 1k info)
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post #28 of (permalink) Old 03-13-2007, 09:06 PM
toyotapower
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hmm, sounds pretty simple. so what exactly is the purpose of the set valve. from what i understand (please correct me if i'm wrong) the purpose is to control the sound waves coming from the exhaust side of the engine. it changes the shape of the exhaust to make the bouncing sound waves return at the correct time (kinda like why a two stroke exhaust has a specific shape). so if im correct on that assumption, what are the possible consequences of taking away this valve?

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