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Scott,
Thanks for the data.
Unfortunately, there's not much I can do with it other than see what you've
experienced. I did find it interesting to note the linear relationship
between MAP and spark advance, which pretty much confirms how I believed it
to be. It would also substantiate Brent's claim that timing advances
aren't really needed in a turbocharged engine, as they're based upon MAP
decreasing with altitude in a normally aspirated engine. When George
says varying timing can be of benefit in a turbocharged
engine, I know he's using internal cylinder pressure (ICP) as his barometer, not
MAP and that's what makes the PRISM system so unique.
I'm not an engineer and I don't have a test
stand to do any serious evaluation of any of this stuff. All I know is
that my engine runs great with my LSE and since installing it over two years
ago, it's worked flawlessly. I can't say that for my magneto, but I won't
be parting with it anytime soon just the same.
Skip Slater
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