beaudreau used and posted this c900t ignition curves - Saab Performance Bulletin Board - Saabnet.com
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beaudreau used and posted this c900t ignition curves
Posted by John N (more from John N) on Sat, 4 May 2002 13:10:41
In Reply to: anyone mapped the stock c900t ignition curves?, kooch, Sat, 4 May 2002 03:25:14
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Ignition curve:
Good fuel
16 initial
36 total all pulled in by 2500
I bring it down to 32 around the torque peak at 5K, tapered back up on both
sides.
Vacuum advance is 6 from very high vacuum to just above idle which is about 19"
of Hg. I taper in 7 more in the cruise ranges, then taper it out as it
approaches 0 psi.
This gives me easy starting, then it idles at 22. I can really lean the mixture
out at cruise, it doesn't even register on the A/F gauge from 15 to 8" of Hg.
The only reason I'm drooping it around the torque peak is to compensate a little
when I put the boost back to it.
Poor fuel
16 inital
32 total pulled in by 3K, dropped to 30 from 4500 to redline.
Vacuum advance is 3 and 5 more pulled in at cruise.
I'm still working with the curve, but these seem to work really well. I haven't
done any testing with the turbo and these curves yet, probably by next weekend
though.
posted by 152.163.206...
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