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There are a couple of threads over in the V6 bolt on section (very old) where they did dyno runs to compare the two. The V6 has very sensitive knock sensors and does pull quite a bit of timing on 87. Putting 93 octane in did increase the HP a bit. Only you can decide if it's worth the extra money. You certainly won't get higher MPG using it.
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New Ride -- 2015 Z06 2LZ (stock) -- Journal
Old Ride -- 2012 Camaro 2LT/RS (647 RWHP & 726 RWTQ) -- Build Thread
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