I have a 2012, which should be nearly the same as yours as far as jetting goes (all bikes are slightly different though). I put an Area-P full exhaust on it, removed the snorkel, and the CA emissions junk. I then switched it to a size 95 main jet, which is smaller than the stock of 98, and it's damn near perfect (I had it checked on a dyno with AFR sensor). So no, you don't need bigger jets, you probably need to clean your carbs as others have said.
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bike * miles = smiles
smiles / bike = miles
smiles / miles = bike
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