im rebuilding a gsr and i have the dual stage intake manifold, and my friend told me to just throw it away and get either a type r, port the one i have now, or go skunk2, and im guessing by the "throw it away" it sucks?

to my understanding the vtec cross over for the gsr is 4400, and the second stage intake is 5800 but i could be wrong, and with the cam cross over before for the intake i could see where there would be a power loss with less air, but if you use the butterfly manifold and get a vafc and change vtec crossover from 4400 to 5800 where its in sync with the manifold would it be the same as not using the butterfly manifold and getting one with more airflow than stock?