Southwestern Grilled Pork Tenderloin with Salsa Fresca

Name: Southwestern Grilled Pork Tenderloin with Salsa Fresca
Ingredients: Salsa Fresca; 1 cup finely diced red onion; 3 cups seeded and cored plum tomatoes, finely diced; 1 large Jalapeño pepper, seeded and finely diced; 2 tablespoons minced cilantro (or flat leaf parsley); Juice of a large lime; Salt to taste; For the tenderloin; 2 pork tenderloins, about 1 pound each; 3 cloves minced garlic; 1 tablespoon ground cumin; 2 teaspoons dried oregano (Mexican if you have it); 2 teaspoons ancho chili powder; 1 teaspoon salt; 1/2 teaspoon black pepper; The juice of 2 limes; 1/2 cup extra virgin olive oil; The Salsa Fresca for serving