Its not directly megasquirt related but as a general introduction to ignition timing and its effect on performance less experienced squirters may find it of benefit. Especially when deciding of the timing requirements of a particular engine and head / piston combination. I found it very informative hope you will.
http://www.highperformancepontiac.com/t ... 9hpp_fire/
Jon
A very good article, Squish (quench) and timing effects
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