Greetings all!

I live in the southern US, and I have a 2002 S80 T6 Executive (#274, to be exact) - I absolutely adore it, but I'm having a minor problem. Symptoms include:

· Sluggish starting
· Occasional stalling when attempting to accelerate quickly from stop
· P0236 & 237 codes (from an ODB2 scanner, non-Volvo)

Recently I had a coil pack go bad, and during the process of replacing that, I was forced to remove the "Turbo air system" - forgive me, but I do not know the proper term for the set of what appeared to be molded plastic hoses or pipes that run north & south above the center of the engine. When I got those off, I discovered that the ends that fit to the corresponding engine pipes near the windshield were cracked & broken. They were obviously damaged by a careless mechanic at some point in the past, and I'm certain these fittings are not secure and are leaking air.

My question is: Would this be the cause of the problems mentioned above, and if so, what is the proper term for that part (or if anyone has a part number...) so that I can replace that plastic air conduit? If this is most likely not the problem, I would welcome suggestions as to how to proceed, as well as recommendations on vendors to purchase from.

I have attached a photo to assist.

Thank you for your time!