i did a port+polish job on my intake manifold. Ported each runner ~1/2mm on each side to make each one a total of 1mm wider, and ~1mm lower to make the vertical diameter 1mm bigger too. Then, i polished it to a near mirror finish. lol, i only expect it to make ~1 - 2whp more on the dyno, but i was just wondering if i could get a realistic estimate from someone on here of the kind of gain i may get?

I havent installed it yet, so if anyone has any other good tips/suggestions on how to do this, throw em out there

EDIT: i was also thinking about running 310cc injectors from an Acura legend, will this be neccesary or not?