Super Turbo with a center exit. The exhaust has to flow around the exit pipe. Not my picture. This topic has come up before and I saved the picture.
I'm looking at this picture and I can't fathom how this is not a pretty restrictive design with that exit pipe blocking the flow. The next set of mufflers I get will be the ultra flows.
I've used a race bullet as a resonator on a 4" system on my 24v valve Cummins ram , doesn't really do a lot to quiet it down.
