Ive seen this problem in every other FSI engine; VW, Audi, Mazda.. All those guys talk about carbon buildup being a problem.
I've also heard em say catch cans don't do that much either (seems to be polarized within the community, could be all speculation) - 335dM, can you speak to this? Have you seen or come across long term results from an FSI engine with a catch can?
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