Thread: 78 Trans Am getting some love

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The hyperspark has a offset setting you put in to mimic vacuum advance but it seems to raise the all in timing too much. If it's all controlled with a computer I'm not sure why I can't put in 10 for crank timing 22 at idle and ramp it up to 30ish at 2700 and call it a good start. If you can see the numbers in my chart you can see where I get into trouble. If you look at the very top line of my chart, those are my base values, and the rest is what happens after I add plus 20 of vacuum advance.