Power Loss vs. Spark tables
12-28-2006, 06:38 AM
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Power Loss vs. Spark tables How much power is typically lost from on stock tune between the High Octane and the low octane spark tables when running premium fuel? I read in my tuning manual that the computer interpolates between the two tables based on knock activity. I'm just wondering about the two extremes?
12-28-2006, 09:29 AM
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If you want to know the PCM's model of things look
at the table for % torque reduction vs spark retard,
and see what it says for the difference (HO-LO).
But of course this is only a model based on a stock
motor already at best torque timing (like there is
such a thing).
at the table for % torque reduction vs spark retard,
and see what it says for the difference (HO-LO).
But of course this is only a model based on a stock
motor already at best torque timing (like there is
such a thing).