Cut away of a Dyno Max muffler #18381

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.

370.74 cfm. 222 x 1.67 = 370.74 (via SuperFlow handbook)