Cool, it's ALL DONE NOW. No leaks from what I can see and I just took it for a spin. Boost levels appear to be the same, also it strangely seems that 1st gear is much more powerful. From idle up to 4000 rpms there is definatley more power, and the "power spikes" I got between 3k and 4k are nowhere to be found. Top end is hard to judge. How do you judge 15% more HP at the top? I think it will take more driving to decide for sure if I can feel some real top end gains (I hope so).
Oh yes and the sound. It is low, sounds like a V-8 but not quite as loud. I don't hear the exhaust too much at higher RPMS, which seems strange, but oh well. Also, you would probably hear it better being outside the car... but its great. A meanacing burble kinda noise coming from behind you. It feels like the car is poised to take off.
Not quite sure if it was worth the ungodly amount of $$$ I paid for it, but it sure is nice. I also think I may get more power as the ECU learns.