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    Need help, 2009 GSXR 750 misfiring/low power

    Hello to everyone, new member here so i have a 2009 Gsxr 750. bike has 9500 miles list of mods: Two brothers slip on, set valve removed, cat removed, k&n intake air filter, and PC5 the bike has been professionally tuned at a local powersports shop mainly for suzuki sport bikes. bike has been...