S54 Header Design talk

[3staxontheradio]

Talking about port shape and not primaries but literally exactly what I was drawing out for non circular cross sections in bends and opening up the inner radius CSA to manage air speed:

https://youtu.be/C2n3ywS8ce8?si=Uj6QzzZf9t1Allms

[Abrajam]

Super curious how these will sound once the final product is made. Brysons mullet tune is legit so I imagine once the headers are made, they’ll be just as spectacular. Convinced 3 of my friends to get his tune and they absolutely love it. Would love to try the headers on my dinan s3-r. If a test dummy is needed, I volunteer as tribute 😂

[Casa de Mesa]

Brysons mullet tune is legit so I imagine once the headers are made, they’ll be just as spectacular.

+1! Really enjoying his dichotomy tune!

[freebird]

Question, do stepped headers help mainly by improving scavanging, or from reducing reversion?