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Old 03-10-2004, 09:30 AM
Gawdzilla.'s Avatar
Gawdzilla. Gawdzilla. is offline
FSJ Maniac
Join Date: Oct 11, 2003
Location: SoCal
Posts: 2,617

vacuum advance really only helps when you're not on the gas (when the engine is under very little load) when you're cruising or coasting you develop more vacuum. more vacuum gives more advance. More advance allows you to run leaner, etc.
if you do a lot of stop and go driving tho, forget it. your mileage is gonna suck.
Ed Mitchell
74 J10
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