I would check for a vacuum leak somewhere along the intake.
Gus, the engine won't run if the intake duct is removed from the throttle body. The VAF needs to be connected at all times or the engine wont run.
Try spraying with WD-40 instead of water to look for a vacuum leak, so as not to cause any electrical problems. Also, try a product called Seafoam, its a tried and true product for removing carbon deposits in the intake manifold, valvestems, and combustion chambers.