I didn't follow a recipe, I borrowed from this one for the rub and this one for the high heat/low heat thing.
Rub:
- 1/4 cup garlic powder
 - 1/4 cup onion powder
 - 1/4 cup chile powder
 - 1/4 cup salt
 - 1/4 cup black pepper
 - 1/4 cup paprika
 - 1/2 cup brown sugar
 
Directions:
- Preheat oven, 450
 - Put rub ingredients in a bowl, mix.
 - In an easy place to clean, spread oil over the loin.
 - Rub in the rub.
 - Place on roasting tray fat side up.
 - Place in oven and cook for 10 minutes at 450, reduce temperature to 250 until cooked.