don't we have some enterprising people moving their maf to further in system so it was just in front of the throttle body for a more "real world" reading?
I remember folks saying there were all kinds of advantages to doing that, including being able to vta if desired
blow thru definately owns draw thru
but to the OP, like everyone said, if you arent going to go to a blow thru setup then just recirc or do a hybrid setup like some run. even hybid its still loosing some metered air and such, just not as much.