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Shiv@Openflash I notice a power difference don't even need to dyno it lol, Stage 1 is noticable and Stage 2 UEL (in my case) is even more noticable, back on Stage 1 and its still all good.
Oh yeah in regards to the original post, seems safe going by the logs I have done @ WOT in 90-100 degree heat or at least it seems normal, the ECU mostly takes over and adjusts accordingly within reason depending on conditions, I am on crappy CA 91 (Chevron) as well.
2015 FR-S 6MT fyi