[EricH]

Originally Posted by jkelleyrtp

I'm curious, does a cumulative 15 inches apply to all protrusions from the frame perimeter, or can there be multiple extensions from the frame perimeter cumulatively totaling more than 15 inches? i.e. dual intakes or wings at 14" each.

Q&A clarified that one, too. 15" is the limit, but you can have multiple extensions within that limit.

Basically, the 15" is a distance from the Frame Perimeter. Stay inside it with anything you have out, and you're good. If something (one thing) goes over, penalties ensue of varying degrees.