I have decided to want to get a header for my car. I can deal with the increased noise but i want to know if the the header will make the car ride rough. In my old car the header/cat back exhaust/intake combo was GREAT for power but it made the car so loud that it rumbled and rattled just at idle. I realize the I6 is a very smooth powerplant but is a header going to sacrfice ride comfort at all? Thanks for any help.