Smokey Chipotle 'Cue Sauce

As The book says:

"You'll never consider store bought sauce ordinary again once you add these three magic ingredients." Magic indeed...

2 (18 once) bottles barbecue sauce. (I think i used some bulls eye)
2 canned chipotle chili peppers
2 tablespoons brown sugar
1 tablespoon chili powder

1. Mix together in a blender until smooth.
2. pour into a saucepan and bring to a boil over medium high heat. Reduce heat and simmer for 30 minutes.

Yields about 2 1/2 cups