I just ordered a K&N air filter kit, jet kit, and a Big Gun full exhaust system for my Rappy 350.
Where am i gunna feel the most change in proformance? I just got into quad riding so i dont know wut helps with wut.....(HP,acceleration, throttle response, etc...) THANKS[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]

 

Since your doing a header, you will feel more low end torque, most benefit will be in the mid range.