http://www.youtube.com/watch?v=u3Kqh...79160CDC152E38
Lots of folks ignore or aren't aware of just how important a regular boost leak test can be on your turbocharged car. This simple tool and testing can keep your car running happy and provide a great deal of diagnosis information when used correctly. I found this vid a long time ago after having created a BLT apparatus from scratch via some ancient online instructions, but my man Jaffro went ahead and put together this great little vid segment that covers construction, use, and lots of little other tidbits and tricks you may find useful. Building the tool yourself (about $30 and an hour of your time) can save you lots of money and headaches.
Enjoy