Soot in the intake manifold is something a lot of BMW's suffer from.
The soot comes from the car's AGR system which is the system that makes a BMW more eco-friendly by recycling some of the exhaust gas.
In order to prevent total clogging of the intake manifold, regular cleaning is necessary.
So, if you want to maintain the full potential of your engine, you need to clean it out with a special soot cleaner.
Contact Sergio Automotive to find out more.