ok, my dad has done auto body work for over 20 years now. hes owned his own shop for years , and now works at a local shop. i ask him does he do porting, he said can do porting, he asked was it for my banshee, i said ya. he tells me its a waste of time, and hes not gonna do it for me. this is hella weak. only thing he said was that when u continuously ride it a residue builts up in the heads form the increase flow of gas, so its not worth it. i couldve gotta free port job