This is probably a simple question, but I don't know how the ECU works, so here goes:

With the SNAP Flash in place, how quickly can the ECU take advantage of the higher octane?

I typically drive to the track so that I get there on very close to an empty tank-may 1-2 gals. I put in about 6 gallons (60 miles, 2 sessions) and plan to refill after than for 2 more sessions. This would be with 100 octane.

Does the ECU adjust immediately as it percentage of 100 octane in the tank increases?

What specific improvement will there be? Higher horsepower at top end?

Thanks in advance of the educamation...