I have the rear bumper off as well as the driver side rear inner fender liner, Just about ready to build a pressure tester to the turbo. Is this the way to do it or is the air box inlet the better option? Thanks in advanced! --Rob

 

Both ideally

-checking at the turbos will check the DVs
-checking at the airbox inlet will check the inlet piping

If you're just after boost leaks, pressurize at the turbos.

 

Thanks guys for all your help Markski just got back to me and said i should check from the turbo's, So that i will do!