Rub or mist your slow cooker with olive oil to make clean up easier. Not required but is handy.
Sprinkle the loin well with salt and pepper, be generous. Place the loin in the slow cooker, add 1/2 cup of water and cook on Low setting for 6 to 8 hours, or High setting for 3 to 4 hours. This is two pieces of loin, 1 kilo, I also use these and cut in half for boneless pork chops :)
Check tenderness at 6 and 3 hours respectively, if the pork shreds easily with a fork, it is done. When done, shred with two forks right in the slow cooker, nothing to fine, just good bite sized pieces.
20 minutes before you want to serve, place a pot on the stove and add the broth and heat to boiling then add the noodles and cook until just tender. The stock should be mostly absorbed. If there is still liquid, go ahead and drain some of that off.
Use a slotted spoon and remove the pork from the slow cooker and add to the noodles.
Stir to combine well. If the pork is not hot enough, heat the pot on very low heat for a few minutes, add a tablespoon or so of liquid from the slow cooker to prevent sticking, this is not a soupy dish. Taste and season as needed with salt and pepper.
Serve with a salad for a complete meal.