can't rich it out

[assa 98gsx]

my mods are big16g, extreme turbo fmic, rc 550cc, 190fp, 3" exhaust, safcii, datalogger, egt gauge, and boost @ 16psi.

I pulled a 3rd gear log

rpm timing trottle pos
3699 3 99
4121 5 99
4417 7 99
4980 9 99
5558 10 99
5984 12 98
6238 14 97


my high thr setting on the safcii is -6% all across. When I tried adjusting it from -8% to -4%, the timing doesn't advance and stays at 14. Can anyone tell me if I am running too lean and why can't I richen the car up? The EGT hits right around 900C at the end of third.

 

[DCsGST]

I'm bringing this back from the dead, but looking at your High settings on your S-AFC and comparing them to mine, it looks to me like you are running hella rich already which is pulling your timing. Although I have a Big28 Killer, it's has a big 16G compressor. Why didn't you log O2 bank 1?

My high settings are -17 across the chart and I'm still running rich. Try pulling your High settings down to -15 and then do a 3rd gear pull. You should see your timing jump back up to 18 or 19 by 7K rpm.