I want to start doing some mechanical work myself on my 99 S70GLT, starting with the simple stuff. I changed the air filter, now I want to change the spark plugs. I removed the torx screws from the 2 plastic covers, but the big one does not make it past the turbo pipe. Do I need to remove the turbo pipe, or just loosen the hose clamps at both ends? And, forgive my lack of knowledge, but what pipe is this, exactly? Thanks.