Max1man

iTrader: (2)

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.

BigLou93SE

iTrader: (10)

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

Max1man

iTrader: (2)

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!!

Max1man

iTrader: (2)

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%.

subs1000w

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

Max1man

iTrader: (2)

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.