Hello RTF, I have a friend who will be racing this 2001 Audi A4 1.8L Off-Road. He has removed all the AIR pump components. He is wondering if it is possible to go in the PCM coding and remove the Air Pump operation so his CEL will stay off. 
Thanks matt
vin # WAUKC68D61A003021
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Chassis Type: 8D - Audi A4/S4/RS4 B5 (1995 > 2001)
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77
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Address 01: Engine Labels: 058-906-018-ATW.lbl
Part No: 4B0 906 018 M
Component: 1.8L R4/5VT G 0002
Coding: 16751
Shop #: WSC 06325
VCID:

Thanks matt
vin # WAUKC68D61A003021
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 8D - Audi A4/S4/RS4 B5 (1995 > 2001)
Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77
-------------------------------------------------------------------------------
Address 01: Engine Labels: 058-906-018-ATW.lbl
Part No: 4B0 906 018 M
Component: 1.8L R4/5VT G 0002
Coding: 16751
Shop #: WSC 06325
VCID: