RacingLine Oil Catch Can for MQB Evo Gen.4How does it work? Not all catch tank kits are equal. The RacingLine Oil Catch Can keeps your EA888 gen. 4 2. 0 TSIs intercooler and inlet tracts clear of oil build up and provides clean airflow through the inlet manifold. Fitment reduces inlet carbon buildup over the long term while keeping oil and water vapour out of the intake system. Careful develop means that the system maintains correct crankcase ventilation under road, track and race conditions.