Preheat oven to 450°F.
Preheat a heavy bottomed pot over medium heat with vegetable oil and brown the bacon until crisp. Remove to a paper towel-lined plate to drain, leaving the fat in the pot.
Add the sirloin to bacon drippings in the pan, using the back of a wooden spoon or a potato masher to break it up while it browns. Season with the chili powder, cumin and ground black pepper.
Add the onion and garlic, and cook until softened, about 7-8 minutes. Add the beans, brown sugar, Worcestershire and beer, and cook 5 minutes. Add the chili sauce and season with salt to taste.