Cut away of a Dyno Max muffler #18381

Some great photos and discusion in this thread.
Restrictive Mufflers
Oooo. Thanks, I think I forgot about that one.
I misread what you typed. Ignore my previous comment. My bad
No no! It’s all good. I just didn’t know where you were going with it. Sarcasm? LMAO....

Every 318 iv owned (quite a few) has been straight piped none of them have been over bearing loud. They have all been single pipe with manifolds. Is there any performance benefits in a straight pipe ( no muffler at all) or does it hurt performance? Iv heard that no muffler hurts performance and can damage valves etc is any of that true?
There is truth to it.... it is like the old adage, race parts (Top fuel zoomy headers) on a stock engine (318) does not mean the car goes fast.