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Ok, after doing the 2.0t coil conversion, next step are the Forge tunable Div valves. Looking at some pictures with modded dvs, the valves are symmetrically arranged, while on my car one is vertical, the other horizontal. Due to the airflow, I assume I will install the new ones the same way. I still wonder, how did those guys manage to have them both in vertical position.
OK, so I got my answer from the local Audi dealership. Previous owner installed one of them valves the wrong way. The piston inside should be activated by the flow from the horizontal hose, while the vertical hose is for exhaust.