I beg to differ, the gains are not minimal at all (with the 1.2 update), the car is FAST with stage 2, the pull in higher gears feels so good. Loudness, you only hear it when you floor it and catted and resonated is quite silent. Money, I got mine used for 200 and something. Smell? not with a cat.
That said, I sold my downpipe and went back to stage 1, only because of the wastegate sound that gets really amplified with aftermarket downpipes. I really miss that power, but I couldn't stand the rattle.
The most mystic rattle of all, I never heard it on my car, dont know if ALL 2.0T should get this rattle but mine is okay. Does it exist a video that we can hear this rattle ? post it in private if it exist plz, or here.
And Gunkata, maybe a stage1 is enough for u, but u will never pass a Bugatti if u dont go stage2 !! Even with ultra lightwheels.