yeaaah no, bolt ons have never been measured in "only needed if im pushing xxx hp" exhaust used to be the first bolt on. again not trying to get off topic or start crap . but an exhaust is a bolt on available to n54 cars. my thought was when you install all available bolt on's your car is Fbo.
we can agree to disagree, maybe i'm mistaken, please proceed with thread..
great vid good runs.