Well I was just on youtube checking out the aero turbine muffler.
This is the link:
It seems that it is in fact a straight through design like the magnaflow.
If the aero turbine technology doesn't work or if its just a gimmick of sort, at least it will perform as good as the best flowing muffler which is the magnaflow, since it is a straight through muffler.
One thing for sure is that it will be much louder than the magnaflow. The aero turbine doesn't have packing material like the magnaflow does.