Did you do a throttle body basic setting with vcds post TB install?
Prerequisites:
Ignition ON
Engine OFF
System voltage at least 11.0 V.
[Select]
[01 - Engine]
[Basic Settings - 04]
Group 060
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
Wait until Field 4 shows "ADP. O.K.".
[Done, Go Back]
[Close Controller, Go Back - 06]
Switch Ignition OFF.