The VAG TFSI has become one of the most popular engines out there for tuning and driving hard, so this lush-looking item from Forge Motorsport could be more essential than you think.
Designed to blank out the stock PCV (positive crankcase ventilation) system, which commonly degrades over time, it simply and effectively diverts the breathing to the rear of the cam cover only.
Isolating the cam cover from the inlet manifold in this way has the advantage of curing excessive inlet blow-by, which causes plumes of black exhaust smoke or a loss of boost.
A right clever bit of engineering for under 85-nicker.
For more info see Forge Motorsport