porting

Recently somebody posted a link to MOTOTUNEUSA about engine break-in ? ( Gary was that you ?) Well I found it very interesting so I subscribed to the link & started reading all the other racing secrets. One that really caught my eye was shrink-porting the intake ports of cylinder heads to...

so im getting pieces together to do a DIY fuel injection set up. Im using 41mm throttle bodies. After looking at the parts for a few days its obvious that the intake ports on the vmax are quite small...in relation to todays liter bike 160hp machines. Anyone have some thoughts on porting a set...