Originally Posted by MondoMor
More precisely, the SA-8 doesn't have a user-adjustable relief. It's set at a fixed pressure. If it did, I likely wouldn't have gotten those ~60fps spikes.
I'd love to see someone do something like this with a TPX, though the method would be obviously different. And a Sydarm...
I think the spikes have more to do with the reg springing, and volume chamber. Someone else also mentioned theirs became more efficient after a break in period.