Timing Map

[Bruce Plecan]

If someone was looking at a say 1989 350 CID stock Firebird
auto trans, ie 1227165 ecm, MAF the timing table might look
something like this.  Again, for educational purposes for understanding
engine management.

RPM    32   48   64   80   96   112  128   144   160   176   192   208
 400     18   18   18   18   18   19     20    22      21     20     20
20
 600     16   16   16   16   17   18     20    21      21     20     20
20
 800     15   15   15   15   15   18     20    21      22     21     21
21
1000    18   21   25   25   26   26     23   23       23     19     19
19
1200    19   24   28   28   27   22    19    18       18     16     16
16
1400    20   26   31   31   31   28    24    22       22     19     19
19
1600    21   36   36   34   34   33    30    26       23     22     22
22
1800    23   33   36   36   35   34    33    26       23     22     22
22
2000    23   33   36   36   36   35    33    30       26     24     22
22
2200    23   33   36   36   36   36    34    33       29     24     22
22
2400    23   33   36   36   36   36    35    29       26     24     22
22
2800    23   33   36   36   36   36    35    28       24     20     20
20
3200    23   33   36   36   36   36    33    28       23     21     20
20
3600    25   34   38   38   38   36    32    27       24     22     20
20
4000    25   27   30   34   34   36    33    28       25     22     20
20
4400    25   34   38   38   38   36    32    28       24     24     23
23
4800    34   40   40   40   40   38    35    32       29     25     23
23

Spark Adders

400     2
1200   4
2000   5
3200   6
4800   8

If you don't understand all of what your looking at please refer to
programming 101.
  Being maf, the fuel stuff is rather meaningless to stare at,
I got some other chev stuff, that will probably be fortcoming, but
I'd really hope some DFIer, FP SEFI, HALTECHer would post some
of their maps..
Cheers
Bruce