I have not been able to get the Supercharged Mustang to correct the AFR's as it should. Logging fuel pressure shows a drop in pressure from 60 down to 50 psi as I do a pull on the dyno. I have adjusted 43012 Inferred rail pressure vs fuel flow to feflect this and the AFR still goes lean. There is sufficient fuel as I can command a richer mixture and get the desired measured AFR. When I look at the logs it appears to me Commanded AFR and WB EQ ratio are back to front (incorrectly labelled). My external AFR sensor shows what equivalence ratio commanded is doing not the WB EQ. I treid playing with the O2 closed loop bias but there was no change. The car has a CAT back.