logged the car tonight, on paper not much difference slightly more boost and holds it better at the top end! few g/s more airflow, but the main difference is driving it! gave it a good pasting and feels much more responsive and turbo sound is alot louder. im probably not seening more boost as with the standard tip it was meeting requested pretty well so any extra boost is going to be vented i think, but worth getting in my opinion. will log later on when im running the car on the fuel that the map really needs! v power and octane booster and see if it look better then. but all in all very good and looks the part as well