Due to human error, I am not longer going to Japan as my next assignment. I am bummed because not only is it a rare duty station for the Army, in my field it's a a great assignment for folks wanting to be Warrant officers.

Thankfully, all is not lost and I will be going to Germany instead. The position isn't quite as beneficial for career, there is a lot of opportunity for schooling.

Anyways question for the German folks, I know most modifications to cars are Illegal but how legal are Factory Performance parts? I am looking at Gt500 Mufflers and maybe a boss 302 intake manifold, but don't want to spend the money if it's illegal over there