93 generates more power then 91 octane. Do a check of posted dyno runs of CA cars vs. high octane east coast states. Honda posted some stats on their V6 a few years ago & the spread was 10BHP. That being said the factory tune will not adapt to much over 94.
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Kevin
Dravit Gray, Black Leather, Moonlight Roof, Red Calipers

2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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