KOR porting with stock pipe jetting?

Porting needs something to complement it and a stock pipe is not the greatest thing to use.

Depending on your other mods you may have to consider changing the jet.

What other mods are there?
 
only other mod is no air box lid but that was already jetted for.

The only reason it is running porting with no pipe is because it was a build for a friend and we were getting ready to do a pipe and he blew the motor up which prompted a full rebuild which meant he had no funds for a pipe anymore. Figured might as well get it ported while it was out being bored. The pipe will come soon enough.