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Four bolts on the inlet to intercooler where the vacuum actuator is.
Best to unplug the intercooler fan and sensor, remove 4 bolts and take the whole intercooler with mounting frame OFF.
Then you can get to the 4 bolts, remove them and screw out the two tiny screws in the butterfly shaft, be carefull with the "0" ring, remove butterfly, put it all back together and re install the intercooler.
DON"T and I mean DON'T, lean or rest on the top radiator tank with your knee or whatever, if you snap the little pipe off, it's another $400.
Cheers, the ferret.
EDIT: When you take the rear intercooler hose off, you will see the butterfly inside.
Last edited by the ferret; 5th October 2011 at 01:34 PM.