How can i make my 2005 arctic cat 250 exhaust louder.?

I have an 250cc Arctic cat atv and I want to make it louder it has alright power i just want to make it louder. I am 14 and I am a great mechanic.|||the #1 threat to our riding areas is loud exhaust.if you are a responsible rider, you already know that.if you are a "great mechanic", you already know that it will only have a negative affect on performance. are you a great engineer? then leave it alone.|||Buy a new sport exhaust,or if you cant afford it you can Always take the baffles out witch i don't recommend because it will defiantly hurt your ears lol