I have a 2002 1.8t A4 Avant Quattro and automatic.

Consistently get these 2 codes:

17536 - Fuel Trim; Bank 1 (Mult)
P1128 - 001 - System too Lean - Intermittent - MIL ON
16804 - Catalyst System; Bank 1
P0420 - 002 - Efficiency Below Threshold

Have updated the software to latest version (0005) for Catalyst issues.
New MAF (Bosch).
New coil packs (recall)
New fuel filter
New air flter
New PCV

VCDS shows front and rear O2's check OK
Aux vacuum pump checks OK in VCDS test
Have been over all the vacuum lines several times (it was not routed properly when I bought it)
032 block has idle staying in range. The additive keeps going to plus 14.

Fuel pump is flowing 138 liters/hr
Fuel pressure showing 55 PSI at the rail

What is the spec for the stock fuel pump flow?
What is the spec for the stock injectors?

Any other thoughts, or areas to look would be appreciated