hey guy's just got a 2003 banshee it's not comparable to all the 4strokes i've preowned, ok mine has jet , k&n , fmf powercore2 in the back, stock front i want to know what you guy's would improved next and if a rejet is needed for certain parts. ex: if i put boost bottle do i need rejet.....if i had front pipes do i need rejet....etc.... so thanks in advance. Danny