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Message: <blockquote data-quote="Thomas_W" data-source="post: 1426835" data-attributes="member: 9106">wastegates Always stay closed until the turbo is producing boost. Once the boost pressure meets/exceeds the predetermined psi by the wastegate spring, the wastegate will open allow exhaust to bypass the turbo allowing the turbo to slow down. You'll never see a wastegate move just from sitting in the driveway revving the motor.  You will also never see more than 1-2 psi of boost by revving he motor, it has to be put under a load for boost to be made (ie drive rhe car).when you say "making boost on the hot side"... WTH?  Boost isnt made on the hotside, only the cold side.  Which hot side piping is coming loose?  The piping from the heads to the turbo, or the downpipe aft to the mufflers/exhaust. If your blowing the hotside piping apart pre the turbo, you either have a really poorly assembled hotside or a seriously undersized turbo causing excessive back pressure. If its the piping after the turbo (downpipe, etc) then you need to find and eliminate the restriction(s) causing the problem.</blockquote>