Oct 9, 2012 #1 09 arctic cat m8 Active VIP Member Joined Feb 18, 2011 Messages 1,027 Reaction score 1,184 Location canada Stock 09 m8 153 and was thinking about getting the cylinders ported, who does it around red deer, how much for both, and can you really feel a difference when it has been done, and what would the approx Hp gain.
Stock 09 m8 153 and was thinking about getting the cylinders ported, who does it around red deer, how much for both, and can you really feel a difference when it has been done, and what would the approx Hp gain.
