Pete, it does not void your warranty, only if they learn about it and they say something, otherwise they should have no idea. Mine has been there for a while and I swear it gets better and better. I can't believe how fast my car is. Not tooting my horn but this sucker is QUICK.
Some other great news to pass along, we don't need any special passes or permits for any of the sites at Colt State Park, I just spoke with them and we are Golden, we can take as much space as we need. Yahhhhhhh!
Rick