Thanks for the info and .02 worth. I was deployed to Stuttgart for 90 days and had a great time there so I am familiar with the autobahn. I had rented a volvo and remeber being passed like I was standing still at 125mph. I agree with your assesment though and am in no hurry to change my 530 now. I was curious if I have to change my exhaust system if I mod a chip of future shark injector etc.. I will really have to decide when I determine where I will be lliving and th ecommute conditions. If traffic is maxed at 125 mph then there is no need for me to mod. I am certainly happy with its performance. I will change to better tires though.