In A Large Resealable Plastic Bag, Combine The Lime Juice, Oil, Garlic, Cumin, Oregano And Pepper; Add Pork. Seal Bag And Turn To Coat; Refrigerate Overnight. Drain And Discard Marinade. Grill Pork, Uncovered, Over Indirect Medium Heat For 6-7 Minutes On Each Side Or Until Juices Run Clear. In A Bowl, Combine The Salsa Ingredients. Serve With The Pork.