Originally Posted by GreekboyD
I wouldn't doubt it man. Lots of people felt my air intake manifold didn't have to be replaced and could have easily just been cleaned out. The dealer insisted.
I wasn't going to argue...lol
I have a buddy that's a BMW master tech and him and I discussed this exact thing the other day. I was worried about my car and the carbon build up and asked him whether I could clean my intake manifold as preventative maintenance. I guess they attempted this repair at one point but he indicated that the manifold is complicated enough with the runners and passages that they struggled trying to figure out a way to get it completely clean. They ended up getting it cleaned in a large ultrasonic cleaning tank and said that worked. That said, BMW must not endorse this method as they have been covering replacements of them since.