[ShadowMan]

Did you clean your maf yet, I never thought it would make that big a difference, but it really does. Buy some MAF cleaner, like stated above, take out maf and spray down the little fillament reall good from both sides multiple times and let air dry. It'll make a difference. As far as testing for boost leaks, test the whole intercooler and piping system as one, as in disconnect cold pipe from throttle body and adequately cap and seal it, then remove the hot pipe from turbo and hook up your tester cap and pressurize. That way you can see if the whole system is sealed as a whole, couplers, intercooler and all.