How to increase power of my yamaha fazer 150?

i have recently readjusted my clutch plates,so nw i am able to do wheelies very smoothly....and pikup has significantly increased..!!! But i want to churn out more pwr from my bike,so what shld i do?? Pls also suggest sum *local language* cuz wenever i speak to mechanic they really dnt undrstnad waht m talkin abt..!! If possible also mention its cost..!! Please share ur xperience...!! What wud b the cost of k&n filter for my bike?? Nd how shld i demand for it?? They dnt understand..!! Shld i say raching filter?? Thnx..!!