bought the S4 Sports Exhaust from SJ Sportscars in the UK back in 2003 (and he's still selling them). One of the best purchases I ever did. Sounds great, was pretty cheap and as a bonus I got to remove the original Lotus exhaust that weighed some 360kgs.
Still going strong today.
I’ve got a 05’ 545i with the same engine I think and it’s a great car. Stay on top of maintenance of course though. Any questions about repairs, shoot me a message because I’ve done some work to that engine
Am I right to believe that there is a pressure build up inside the engine? (refer to the pictures) If so, what is causing it? Could it be the EGR valve? or PCV valve? But there is no funny noise coming from it, nor constant black smoke coming out of the tail pipe. Although, when I accelerate...