Do they? I'm using an ebay type catch can an its ok' date=' no build up of pressure. [/quote'] Well the outlet is 19mm.....by makin the inlet of the catch can smaller you are not letting the engine breathe.....i wouldnt run anything smaller than a 19mm!
Any vr6 specific box will fit the engine physically. Slighly different ratios is the difference. Whether it will fit straight in a Passat i dont know!!
What tool is needed? protyre in enfield did mine previously. or maybe try Andy at 312 ware road hertford sg13 7er....just behind the mitsi and renault dealers. He runs hertsdubs/nomads.