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Starting to be a Audi enthusiast. They seem to be very well build but also complicated in most areas.
To date I have a 2008 A8L 4.2L and a 2012 AUDI A4 2.0T QUATTRO Premium Plus S-Line.
The A8L has the oil fumes venting back to the intake has been blocked and vented through the valve cover NGK filters.
For the A4, I would like to gain back the ~45 HP that the factory has suppressed for emission reasons.
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