i have a 2000 a4 with a head and cam package and custom tune
car was running good then started runing bad misfires i replaced the
plugs reset cpu still the same . i unhooked the batt for 24hr let car
run for 20min still the same these codes came up bo-raf u1096 u1064
u1016 c2120h pcm po507hc need help please

 

Check this out. Its causing your issues:

DTC P0506 or P0507
Circuit Description
The throttle actuator control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle plate. In order to decrease idle speed the TAC system closes the throttle plate, reducing air flow into the engine. In order to increase idle speed the TAC system opens the throttle plate allowing more air flow into the engine. If the actual idle RPM does not match the desired idle RPM within a calibrated time, this code sets.

Conditions for Running the DTC
DTCs P0107, P0108, P0112, P0113, P0117, P0118, P0125, P0171, P0172, P0200, P0300, P0336, P0440, P0442, P0446, P0452, P0453, P0502, P0503, P1120, P1220, P1221, P1514, P1515, P1516, P1635, or P1639 are not set.
The engine is operating for at least 2 seconds.
The engine coolant temperature (ECT) is more than -40°C (-40°F).
The intake air temperature (IAT) is more than -40°C (-40°F).
The barometric pressure (BARO) is more than 65 kPa.
The system voltage is between 9-18 volts.
The vehicle speed is less than 4.8 km/h (3 mph).
Conditions for Setting the DTC
The actual idle speed is approximately 150 RPM lower than or 100 RPM greater than the desired idle speed.
All above conditions present for 15 seconds.
Action Taken When the DTC Sets
The PCM will illuminate the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.
The PCM will store conditions which were present when the DTC set as Freeze Frame/Failure Records data.
Conditions for Clearing the MIL/DTC
The PCM will turn OFF the malfunction indicator lamp (MIL) during the third consecutive trip in which the diagnostic has run and passed.
The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
The DTC can be cleared by using a scan tool.
Diagnostic Aids
If the condition is intermittent, refer to Intermittent Conditions .

Test Description
The number below refers to the step number on the diagnostic table.

This test determines whether the engine can achieve the commanded RPM. If the engine does not reach the commanded RPMs, the test determines whether the RPM is too high or too low.

Step
Action
Values
Yes
No

Schematic Reference: Engine Controls Schematics

Connector End View Reference: Powertrain Control Module (PCM) Connector End Views or Engine Controls Connector End Views

1
Did you perform the Diagnostic System Check-Engine Controls?
--
Go to Step 2
Go to Diagnostic System Check - Engine Controls

2
Start the engine.
With a scan tool, command the engine speed up to 1500 RPM, down to 500 RPM, and up to 1500 RPM.
Exit the RPM control function.
Does the engine speed correspond, within 100 RPM, with each command?
--
Go to Diagnostic Aids
Go to Step 3

3
Is the engine RPM 100 RPM more than the desired RPM?
--
Go to Step 4
Go to Step 5

4
Inspect for the following conditions:

Vacuum leaks
Excessive deposits in the throttle body
A faulty PCV valve
Did you complete the repair?
--
Go to Step 6
--

5
Inspect for energy draining load on the engine, such as ones caused by transmission conditions.

Did you complete the repair?
--
Go to Step 6
--

6
Use the scan tool in order to clear the DTCs.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC run and pass?
--
Go to Step 7
Go to Step 2

7
With a scan tool, observe the stored information, Capture Info.

Does the scan tool indicated any DTCs set that you have not diagnosed?
--
Go to Diagnostic Trouble Code (DTC) List
System OK