Yes Sir im aware that SAFC's don't control timing however under 12-13 psi backing base timing off is fine.
I ran my KA-T two years before leaving for japan with my SafcI. Drove it daily along with drag, auto-x and drifting pretty much every weekend. It's better than running around completely unregulated.
Timing increases negatively with OBDII setups more so than OBDI setups which I ran. Im sure you knew that considering you are in the tuning buisness. Safc are useful to those with lower end setups... proven.
My Setup had zero issues other than wishing the timing was more agressive right above mid-range but like you said no timing control with the SAFC so it was a con with my setup but got the job done. I street tuned it for normal driving myself however needed a dyno to help with the HI crossover maps.
Holset H1C turbo
Tial 38mm wastegate
3in V-band custom dump/down pipe
jgs tools custom stage 1 manifold
dsm bov
detachwork 480cc injectors.
safc1
aem uegowideband
greddy Full auto timer
ssac fmic
earls oil line fittings
summit racing SS oil line -10AN drain
AutoMeter -4AN feed
JGStools adjustable Oil pressure kit
NGK copper plugs (gapped to .033)
N60 MAF
255 pump