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So I recently got my 2020 STI protuned at a Subaru performance tuning shop near me and before my car had a chance to relearn its values and such it was running pretty fine, no FKL or FBK within the entire throttle range. However just recently I started experiencing a consistent -1.4 FKL and...

What are peoples feelings on OTS vs Protune if the long term goal is just a little more fun/response over stock? This is for a 2020 Sti base. Power gains between OTS and protune are negligable to me here. So I'm really coming from the reliability pov here. I know the pitch about how protune...