How to disassemble the Audi a8 air intake branch pipe?

Audi a8 intake branch pipe Remove the intake manifold, and the sequence steps are as follows:

1. Remove the air cleaner outlet pipe assembly. Pull off connecting plug of throttle control unit. Unscrew fastening bolts of throttle control unit and remove throttle control unit.

2. Pull out the vacuum hose 1 connected to the brake booster on the intake pipe, loosen the clamp (arrow) and disconnect the vacuum pipe connected to the activated carbon canister on the intake pipe. Unplug the connector of the intake manifold pressure sensor, unscrew the bolt and remove the intake manifold pressure sensor.

3. Unscrew the fixing bolts on the intake manifold bracket. Detach wire harness on intake pipe. Unscrew the fixing bolt (arrow) of the air inlet pipe and remove the air inlet pipe together with the gasket.