I read in the Livorsi catalog that a K&N air filter adds 15 hp to this motor....could this be true?

Jeff

I replaced my stock flame arrestors with K&N on my 454 mags. Didn't see any change in performance, but they look lots better and are easier to clean.

I also went to K&N's. No noticable increases. I put them on more for looks, anything is better than the ugly stock ones.