just wondering iam about a few weeks away from getting the final compantats to convert my CPI to MPFI, just wondering if i get my fathers little metal sanding die looking thing(forgive me not sure of the name) and make the holes on the ED manifold a bit bigger would that help prefomance wise or simply don't bother???

it will help a bit but not much without doing the head

Making the runners bigger without doing the head will do more harm than good.

okay so the head is the main contendeor ????

you dont want to go making things bigger.

the right bowl and chamber work will be money and time better spent