Is 100 LL Av Gas any advantage?

2005 215 RXP, installed upgrade SC and injector package. Haven’t had a chance to try it out yet, but wondered if anyone has tried running 100 LL AV gas.
Will it cause any problems with these Rotax engines, give any extra power or just a waste of $$$ ?

Just extra money.

High octane only helps when you’re motor gets heavy modified, like a full blown modified, don’t waste your money!

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