6 Deck shoe, S17, DOA, DAS, RSA, NSurr, (off the top of course).
Hand . . . . . Standing . . . Hitting . . . . Doubling . . . Splitting
8,8 vs T . . .-0.53685 . . -0.53536 . -1.07072 . . .-0.4748
Six and a bit percent difference between splitting and standing, virtually nothing between hitting and standing although if you're counting the remaining composition will affect this and will tilt the odds at plus counts.
IMHO, the difference between splittng and standing certainly isn't enough to justify the risk of splitting when I've a max bet out. I have stated this before and received a slagging from the maths purests who contribute to this forum.