Lets talk upgrades : D So I just got my 2015 Mk7 the other week, and I'm in love. I wanna make some aesthetic and performance changes but I'm not took knowledgeable with diy stuff so I'd pay for all the work. So my question is; what type of upgrades appearance and performance can I get that won't void the warranty, and will either add to, or not lower my eventfully resale value?? I am interested in a stage 1 tune, but If I get that, will I have to put more money into other parts as well?? Any help would be awesome! 