Quick question...I have pulled some good A/F data from my LM1 and am now ready to begin setting up the AFC. Since the AFC works in percentages of correction, is it feasible to assume that 100%=14.7:1? So if I have 11.6@3900rpm, can I simply divide 11.6/14.7 and the result would be my correction factor percentage?

Ehhh...scratch that question...I figured it out...Will post results down below so I dont start another thread for it.

 

I don't know, free bump since this sounds interesting and would be good to know.

 

There is an excel spreadsheet of my results here: http://www.ewjc.com/air-fuel-correction.zip

My beginning data read as follows:

4000 - 12.08
4200 - 11.35
4400 - 11.30
4600 - 11.17
4800 - 11.20
5000 - 11.33
5200 - 11.43
5400 - 11.46
5600- 11.35
5800 - 11.50
6000 - 11.41
6200 - 11.19

Second run after initial corrections:
4000 - 12.29
4200 - 12.50
4400 - 12.60
4600 - 12.51
4800 - 12.80
5000 - 12.73
5200 - 12.70
5400 - 12.69
5600- 12.76
5800 - 12.76
6000 - 12.73
6200 - 12.80

The third and final run after second set of corrections:
4000 - 13.10
4200 - 13.24
4400 - 13.02
4600 - 13.19
4800 - 13.24
5000 - 13.07
5200 - 12.95
5400 - 12.98
5600- 13.13
5800 - 12.99
6000 - 13.10
6200 - 12.62

I might dial up the 6200 a bit but I'm kinda more comfortable having it a little richer at that high of rpm...just kind of a safe zone. I be tunin now!!

 

In response to BigLou:

I've since been told that that is a correct way to calculate it..only you don't want to aim for Stoic under load. I'm tuning for 13:1'ish' N/A & 11.5:1 under N2O for now. I used that instead of the 14.7 stoic for factoring 100%.

 

for the best power on the spray i would go for the 2nd run but if your running a big shot 75+ id go for the safer 1st run

your right about NA mid to low 13s

 

For spraying, I'm going to set the afc to data file number two which is still zero'd out. Then I'll pull some data of runs WHILE spraying because I have a feeling the extra fuel will change the numbers a tad towards the richer side. Then I'll tune the 2nd data file accordingly.