I just got mine installed last night and WOW the change. The induction noise changed, becoming more whole sounding. Boost is easier to control, and when you want to send it, boy does she just go. Installation was a bit longer than expected. Had to take it apart and rotate the nipple to the correct location. First test run after two pulls. P2227 and a P0238. Second adjustment (now only a half turn in) no codes and the car was happy with multiple pulls under different conditions. Holds 20-21PSI no problems unlike before it would struggle to make it past 18 while sometimes holding 20.
On a side note. I did have one hiccup this morning on my way to work. The car decided to throw a pending over-boost code when I was in 4th holding 10psi up an incline. Hoping that it's a fluke since the car didn't have any issues all night when testing and drove under similar conditions.