I should add: a good (proper) way to do this is to pressurize the system, stick your head in the engine bay and listen for hissing. If you can't find it by ear and feel, use a spray bottle filled with a light soap and water solution. Spray the area and you'll see bubbles.
An easy DIY to pressurize the system is to go to your local automotive store, buy a short section of hose that covers the turbo input (where air enters from the MAF) and a rubber valve stem. Then, go to your local hardware store and purchase a PVC cap that fits inside the hose. Oh, at either sore, purchase hose clamps to clamp the hose over the turbo end and the PVC cap. Drill a hole in the PVC cap that will accept the valve stem... It should pop in... If not, use silicone to seal it in. Once all of this is done, clamp the cap into the hose and the other end of the hose to the turbo. Using a regulated air source (you don't want to drive 100 PSI into the system) pressurize the system. A simple bike pump will even work. Then, listen for the hiss(es).