1999 A4 Trans Am, stock bottom end, H/C/I w/TR224-112, 3400 stall
Currently running COS5 in OLMAF.
AFR is running very well in all areas except when I let off the throttle and the car is coasting.
The AFR goes right to ~12.5:1 when throttle is closed.
I attached my tune and a piece of log file for reference.
Thanks