I just put a GFB hybrid blow off valve on my 2.0T. Do you this think something like this could void my warranty?
Unfortunately the forum doesn't support video, but you can just upload to YT and put the link in a post. Then it will show.
As for warranty... basically if something goes wrong any aftermarket parts are reason for an insurance company to void your warranty. Even if it doesn't really alter anything... they'll use it as an excuse.