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went for a ride today . bike runs awesome especialy after i changed out the fpr . now i just need to get my bike on a dyno and get it maped to my pc 3 and bolt on my scotts steering stabilizer .
Just my opinion but I think if you going to spend the money on a dyno tune I would either run that devil and get it mapped or see if you can find a full system pretty cheap so you get your moneys worth out of the dyno time.
id probley have more back pressure considering how long the system is . the yana is the same as a gp exhaust and i took out the cat in the pipe its a california bike