Continuing ignition timing debate from the 416 thread.

As TT5.9mag is saying, how do you get a curve on a new engine?

Guess? Use a curve you think worked on a similar build?

Without steady state testing you don’t know what the engine wants.

And the steady state MBT will show up in a sweep test.

All you are doing in steady state is testing at specific rpm to find what the engine wants at that rpm under load.

It certainly translates from steady state to sweep tests.