So I babied the car into work today with me to scan the codes.
It still blows a good amount of air out of the oil fill cap if you take it off.
Anyways heres the codes.

P0420
Catalys system
Efficiency below
Threshhold bank1
(Running a test pipe so makes sense)

P0411
Secondary Air
Injector incorrect flow
(Removed from vehicle so makes sense)

P0638
Throttle Actuator
Control Range/Performance (Bank1)

P0122
Throttle/Pedal Position
Sensor A Circuit Low input

P0222
Thottle/Pedal Position
Sensor/switch B Circuit Low input

The cars idling super rough, these are the codes from the OBD II at work, I ordered a cheap ebay vag com setup but idk how long till I get it.
Where would you recommend I start looking? The IAT sensor is pretty gummed up, the throttle body is spotless. From everything I've looked up the sensor wouldn't cause these codes (Although I ordered a new one anyways because its pretty cheap and looks like crap) Could it possibly just need a throttle body alignment when I get vag com? or is there a common issue with the A4 B6 regarding these codes?

 

No one?