Hey...
Exterior modifications should be fine. In terms of body kits, rims etc... 3" Exhuast all the way out, should be fine. I even talked to my salesman about adding an intake, and they said it's totally fine. Ignition system, such as wires, plugs are all fine.
Things not to do are cams, timing, port polish, larger bore, pistons, fuel upgrades (injectors), up the boost to max. I can't really think of anything else that would void the warrenty. This applies to all cars too. But it really comes down to failure. E.g If you up the boost to it's limit and the turbo blows on you, then they won't cover the turbo and give you a new one. It's simple.
Just think about, it's like having a CAI and the water gets into the manifold and you can't get your car to start, then they'll tell you because of your intake, they can't repair anything under warrenty.
I'm sure FMIC, BOVs are all fine. Just as long as the aftermarket parts don't mess up anything and in the end you, you complain to the dealer that your car has problems because of your mods. That's like suicide!
Mods? I'd really like to get an intake in there. I'm sure with an intake you can hear the turbo spool up much louder. But i'm not sure who makes an application to fit perfectly in there. I doubt there is even a company who makes one. The windshield washer fuild tank is in the way of the piping that goes down to the fender well... Short ram should do though.
Sorry for the bad english.
