Spark advance tuning made simple and quick?

[Walter Sherwin]

Sounds like something that would be of interest to both the GMECM and DIY
crowds.  Why not maybe paraphrase things in a short E-Mail to the list(s),
and then later as time permits develop your website and let us know where
its located when done.  New/different/bizarre ideas are oft the fodder of
what has not as of yet been conceived.............

Walt.


> Gentlemen, I have an idea that may save tons of time when tuning spark
> advance. In general, I have a very simple way of manually adjusting spark
> advance a known amount on the fly while driving. That way, you could set
the
> entire SA table to say 25 below 60 KPa and say 5 above 60. Then, you could
> drive at known RPMs and MAPs and just manually dial up the SA while
listening
> or watching for knock counts on a scantool. Once you hear or witness
knock,
> just write down where on the RPM vs. MAP map it occurred and how much
advance
> you had cranked in and how much you backed out. Then, its just a matter of
> reburning the chip one time with the results of the run. If there is any
> interest in this procedure, I'll write it up in a website with digital
photos.
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