


The small one is possibly the worst one to change as it's the one that goes onto the turbo. The big bit goes from the air filter housing. They will be attached with spring clamps that you will need a special tool for or you could risk it with pliers and it flying into your windscreen (don't need to ask me how I know). I suppose once you have detached your hose from air filter housing it will be worth putting an egr cleaner through.
If I am honest I would get a garage to fit it if you are a complete noob.