Make you a boost leak detector. Go to the hardware store and buy you a 3" PVC end cap, and if you don't already have them, a threaded fitting that you can snap an air hose into and a tap so you can screw the fitting in.

The OD of the end cap is 4", so undo the end of your air intake line and stick the end cap in the hose and clamp it in place using the factory hose clamp. Then hook up an air compressor with the pressure regulated down to 5 - 10 psi. Spray all your connections or any suspect leak locations with soapy water and look for your boost leak.