once you get the manifold off there are several sensor wires exposed for you
follow procedures in egr cleaning for manifold removal
Once the manifold is off you will see the need for egr cleaning.. so do it now!
needed every 75kmiles,,,buy 3 cans carb cleaner
TB has 4 bolts, the lower rear is tough to get off with it on the car
You can remove the manifold and tb together --then seperate on the bench
I would get a TB to manifold gasket (comes in thermospacer kits) and IACV cover gasket
Just to have them in case one gets torn in removal
Clean the Iacv rod and chamber so it restores full movement and ability
torque spec 16 foot pound for intake manifold main bolts- critical to get right!!