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Certainly the factory design overall is the compromise you mention, and =
as said earlier the settings are chosen for a 'worst case' in what can =
be quite a large variation between engines, plus a safety factor. But =
given the components that come with any particular engine (of our era) =
'tuning' can only consist of setting the timing and the mixture, and for =
those there is only one 'correct' setting. Get those right and you will =
have the best performance and mileage, and by 'right' I mean right for =
your engine and fuel. That may well mean more advance than book as I =
found, which gave improved performance AND mileage, with no engine =
unreliability over the 6 years and 60k I had it..
PaulH.
----- Original Message -----=20
You also have to realize that factory specs are a compromise. They =
are trying to balance performance, mileage engine life and in modern =
cars, emissions. You can tune it for, let's say mileage, but =
performance will suffer. Conversely, if you tune it for performance =
mileage will suffer. Tune it the way you want it to run.
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<DIV><FONT size=3D2>Certainly the factory design overall is the =
compromise you=20
mention, and as said earlier the settings are chosen for a 'worst =
case' in=20
what can be quite a large variation between engines, plus a safety =
factor. =20
But given the components that come with any particular engine (of our=20
era) 'tuning' can only consist of setting the timing and the =
mixture, and=20
for those there is only one 'correct' setting. Get those right and =
you=20
will have the best performance and mileage, and by 'right' I mean right =
for your=20
engine and fuel. That may well mean more advance than book as I =
found,=20
which gave improved performance AND mileage, with no engine =
unreliability=20
over the 6 years and 60k I had it..</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
<BLOCKQUOTE=20
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PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"=20
dir=3Dltr>
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV>You also have to realize that factory specs are a =
compromise. They=20
are trying to balance performance, mileage engine life and in modern =
cars,=20
emissions. You can tune it for, let's say mileage, but =
performance=20
will suffer. Conversely, if you tune it for performance mileage =
will=20
suffer. Tune it the way you want it to=20
run.<BR></DIV></BLOCKQUOTE></BODY></HTML>
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