I have never used a SAFC, but the basic procedure would be as follows:
1. Hook up a wideband o2 sensor for to see accurate A/F ratio data.
2. Set the injector output to run rich across the rpm range.
3. With someone else driving decrease the injector output until you achieve the
correct A/F ratio
If you have an upgraded MAF you will have to account for that as well. If you BOV is not recirculated you can use the SAFC to correct for this, though with MAF based engine management it is better to recirculate.
Watch your MAF voltage while boosting. 5.11V is the limit, but I would consider anything over 5.00V as maxed out. If you have using the stock MAF you might want to consider upgrading as 7psi is border line.
chimmike would be able to give you more specfic details. He used a SAFC on his first QG18DET setup. Also check out
www.sr20forum.com
Good Luck!