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Saw this posted on another forum, looks like quite a good idea.
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The only problem I could see if that the gases still have turn a 90 degree angle and the valve could f00k up.
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xxxx wrote:shame its not designed as a"Y" section, give a good flow of exhaust gases then.
Also a shame it doesn't block the one pipe when not being used, so it pushes it all out the exhaust, or all out the vent pipe.
Good idea though, flick of a switch and you've got a full drag system, flick it again and drive home in silence
Tim
xxxx