Oh wow! That’s weird! I’d love to put some on a flow bench. No one really provides the mufflers flow rate. Just dyno max on there performance mufflers and Heartthrob. I don’t know how to convert 222cfm @10hg to 28hg.
Vizard did years ago and has published it in a few places, including Performance with Economy.
I had an Accurate muffler run on a bench to compare it with the SuperTurbo I was taking off.
