Spark Control over 1.36G/Cyl

[yellz06]

Too bad older PCMs can't get the editable axis labels for spark...

But there is a Scalar that multiplies the G/Cyl output.. that should work w/o needing to scale everything just because you are hitting the top of the table.

[carlrx7]

where?

[realcanuk]

[neoh2ning]

wow thanks a lot great idea to use the spark AFR to reduce timing

[carlrx7]

Just noticed on my logs that the PE/COT table interpolates between values, So now moved my BE/PE values around to take advantage 1.2, 1.225, 1.25, 1.275, 1.3 .... 0 in the 1.2 row, -2 in the 1.25 and -6 in the 1.3

1.20 = 0 timing retard = 0-2psi
1.225 = 1 degree retard = 2-4psi
1.25 = 2 degree retard = 4-10psi
1.275 = 4 degree retard = 10-16psi
1.3 = 6 degree retard = 16-up


1.
-Carl

[monte4ever]

Sorry to see that damage Bill. Hope you get it back together soon.

On the topic of this thread.. a question from a beginning tuner.I am faced with this 1.36 cyl air limit on my boosted LS402.
I have it set at 19 degrees at 1.36 and it carries the 19 degrees from there on up, so I assume it just uses the last cell. Is there a problem with just leaving it like this. It carries the 19 degrees to my max boost which is abouth 12.5 lbs, and that is ok with me. i guess if I went to any more boost, I would definitly have to work around it to drop timing.
I guess my real question is, other than controlling timing, does that 1.36 limit impose any other issues.

Bump for an answer..........