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That line is a test port for the vacuum system. I don't have the exact procedures in front of me, but it is used to test whether there are any vacuum leaks and can be used to test the function of the electronic valves.
I read about the function of this in WIS I believe.
Cheers
I doubt it. The waste-gates are actuated by compressed air, and the diverter valves are actuated by vacuum.
Nick
Nick I dont care what doubt you have because I know without a shadow of a doubt the nipple that comes off the back of the right intercooler is the pressure line for the wastegates!
The intercooler has compressed air in it during an in boost situation! Thus the pressure (compressed air) from the intercooler is routed to the wastegates for the turbocharger. The bypass valves get vacuum from the vacuum reservoir under the intake manifold which gets vacuum from the intake manifold itself from a nipple of the back of the intake manifold. I own a SL600 and have more hours under the hood of it to count.
Divert Air Control system purpose is to reduce charge pressure when throttle is released.
My thoughts;
It looks more or less like the same system as wastegate but this time to bypass
the compressor wheel (as opposed to bypass the turbine wheel of the exhaust part
that the wastegate does). And, while the wastegate can be in a partially open/closed
state, the Air Divert will be either on or off?
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