And most of you all know this, but if a noob is reading this thread and decides to change out his stifling air cleaner for a free flowing air cleaner, and he's running with a vac secondary carb, his car will run
worse until he changes out his secondary spring to match the new slower flowing air/fuel velocity that is a result of the larger volume being moved (i.e. the carb is no longer sucking hard and fast through a straw but is instead breathing slowly and easily though a large diameter pipe).
