you are finding any reason to ditch them eh? lol
i ran open udder which is a bit different from straight pipes for 5,000 miles. did it harm the motor? Not that i can think of. I found other ways to destroy it. it did move my torque curve way into the unsuable range. i dynoed it at 82rwhp or something to that number, but it was a much better with the exhaust on. If you really wanted to get rid of the looks go with boomtubes or exbox.
can you go into alittle more detail of an "open udder" i dont know what that is haha is it loud?