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Here's something to ponder: The "fuse-pull" debate on V8's........the spiel goes that if you have run 87 octane the computer adjusts downward for the 87, but can't adjust back up for the premium fuel, hence the fuse pull reset. Many swear this works, an electrical engineer on another thread showed it couldn't possibly work by the schematic routings, but who knows. I tried it and didn't notice anything, but that's just me.
Here is the question: if you have been running 91 octane for a long-time, say after you did a fuse pull, then you find a place that sells 93 octane, is a fuse pull then required again for the 93 advantage to take effect?
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