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I pressure tested from the intercooler inlet. Bank 2 held pressure well, I went up to 18psi. Bank 1 won’t hold pressure at all. It looses everything in a matter of 3-4 seconds. I can hear the leak coming from somewhere between the throttle body and the intake manifold pressure sensor. I tried soapy water and smoke but can’t see where. The obvious ones would be the intercooler to throttle body hose or the throttle body gasket. It could be the sensor oring or the intake manifold gasket also. I visually inspected the hose when I removed the intercooler to replace the boost solenoid, but could have missed damage. I double checked that the clamps are tight there also.
I’m thinking throttle body gasket.
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