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Vacuum advance benefits?

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firefly View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote firefly Quote  Post ReplyReply Direct Link To This Post Posted: Nov/25/2011 at 10:24am
I use 91 octane,no ethanol. The guy that dyno's my engines said that I didn't need it and he's been right. On the dyno he's run it on 100 octane too. I only have manual trans. if that would make any difference.
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PHAT69AMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: Nov/25/2011 at 12:38pm

Not that it's gospel, but here's one literary reference that states
in the last sentence that Vacuum Advance helps keep the spark plugs clean.
Feb 2009 HotRod Magazine article "Setting Timing Curves".

http://www.hotrod.com/techarticles/setting_timing_curves_tech/

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