So i just got done doing a boost leak test but couldnt really find where my leak was, What i did hear though while i was compressing the air into the intake was oil bubbling. Does anyone know what this could be? I did this test: http://www.a4mods.com/index.php?page...boostleak.html

 

Most likly the compresed air was getting into the crankcase thru one of the breather hoses. Personally i dont like the way that tester is setup as the air pressure is uncontrolled. Its better to use a tire valve stem in place of the air fitting and use a tire filler to pressurize the system. The lower pressure should also make it easier to check for leaks.