S8 v10 intake manifold flaps

[richardracer]

I am only guessing, but from the self study engine guides, there are flaps which alter the length of the intake path ( longer at low speed for improved torque and throttle response) and flaps just in front of the intake valves which pivot out of the way at higher loads, but induce turbulence or tumble home when flow rates are lower.

First set easily accessible with manifold off, second set look like you need to remove cylinder heads.

Richardracer