Everything fit nice and tight. Very simple to install and it sounds great. You can hear the turbo blowoff, and the induction sound is awesome. I’d recommend you get some silicone grease for the stock air box. It was extremely hard to get off but using some of that on the old bushings really helped. Another thing is someone said if you don’t disconnect the battery beforehand, that you will get a check engine light. I disconnected mine, not really sure if it will cause one if you don't and I’m confused why it would but who knows, it’s a German car so I guess play it safe. Speaking of check engine lights, I’ve had it for a while now and it hasn’t come up. That was my main concern but the car seems to be a-okay with the aftermarket.