Header explanation? Please

also to make full use of a real tuned header you want an equaly tuned intake side of your engine.
the thought behind a stepped header would probably be to be able to use the velocity of a smaller primarytube when still havig the greater flow of a bigger tube and the steps could probably stop reversion also but i feel most comercialy available headers use the smaller part of the stepheaders for easier acces to headerbolts in aplications where the boltspacing is to tight to uese a bigger tube.
not an expert just thinking alitle free