Well, I can say I have seen X's flow to 200 cfm and nose over and smoggers flow well to 500.
But hey, I'm not flowing heads and typical, what a word, anyother head?
Oh boy, I just don't know what to say.
I'm just tryin to help the kid out and save a few bucks on head he really don't need. The ones he has now will port out quite nice.