I purchase the PCV valve and three hoses that goes with it from the dealer. I plan to install it myself. I found a thread explaining how to remove the air filter box. The mechanic tells me I might need to losen the inlet manifold or super charger also to do this. Is this necessary? Can someone who did it before explain to me or add some pictures that might help. In SA they want to charge me R2500 labour, 3 hours, while the parts cost me R500.