Real data. EQ standard replacement Magnum head and comparisons with oem and NZ versions.

IMO, he’s already pretty well past what 90% of the typical “home porter” will tackle.

The guy who I got my first tutoring from was big into tackling the SSR early on.........so that probably helped form my process for doing it that way.

Charlie is all about probing and speeds, so I’m sure he knew that if the bigger valve increased the flow, then the already marginally too fast speeds at the SSR would get pushed over the edge.