built lq4 with hot cam ported polished heads, need to change injectors. what is the easiest way to tune for injector swap/ heads/ cam.

 

Take it to an experienced tuner have them strap it to a dyno and let them play with it until they get it right. Hot cams are very finicky bastards to tune but it is do-able with a good tuner left to his or her devices.

 

^^This

"the easiest way" sends up the red flags, because it won't be the right way.