My car is running super rich at part throttle and 5-10psi (10.0 AFR on a AEM WBO2). If I mash the throttle and jam the air in (15psi) I get much better AFRs (11.5).
Below 5 psi (0-5psi) it is lean (15-16).
In vacuum it is normal (14.7).
I also have knock on the top end. I get up to 14* of retard at full throttle, full boost (15psi) and winding it out (most of the time I get less than 14* of knock retard).
I used to run an MSD 6a but it $h!t the bed. I did not have 5-10psi boost issue with the 6a. I need to get it fixed and reinstalled.
Additionally, my fuel mileage has gone to hell and I can smell gas when I'm in the 5-10psi range.
Edit: Injectors are 804s. Cal is Stage III '86 cal from FWD Performance, new fuel pump, Acufab AFPR set to 42psi base.