Originally Posted by
Michael_D
I have been studying different logs, and noticed that engine torque goes up with a lower spark, so I suspect you are correct. I’m a bit frustrated with this, as damn near every book I have says to raise timing to reduce surge – including the tuning school guide I bought. That does not make sense to me, as at lower rpm, I can’t imagine why you’d want to advance spark. I will start working it down some more. Thanks…