Quote:
Originally Posted by Tcoat
It is the MAF cleaner. Well documented symptoms. Also totally unrequired. Same as the "de-carboning of the engine intake". If you have carbon build up in your intake you have bigger issues!
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I don't know about this specific car, but carbon build up on the intake valves on Audis and VWs is completely normal. Because of direct injection, no fuel runs over the intake valves to clean off the carbon build up. I'm a tech at an Audi dealership, and whenever we do a job that requires removing the intake manifold we almost always recommend a decarb. It can get pretty bad after maybe 100,000 km. I probably wouldn't have recommended it at 27,000 though.