Comments have been made to the effect that a manifold with a large plenum (Clifford) will have better peak power, but may be soft on response and torque; a smaller plenum (Offenhauser) the reverse.
However, in a conversation with a hot Corvair engine builder 40 years ago regarding higher CFM with a turbo, he pointed out that the turbo must first fill, then pressurize the entire intake tract before anything reaches the valves. Large plenum = lag. This is not related to spooling delay or turbo efficiency.
