It’s a minor help IMO. For some, it’s a big thing. For decades it was never used or thought about when we did our engines. We were told and just knew by being told or making the mistake as it was, that a certain static would work well with a certain advertised duration. If your engine was pinging on 87, move up to 91/93 and not worry. Bigger cams required bigger compression. The old timers had it figured out really well and passed on that knowledge.
