Add mango pulp and cook for 5 minutes, stirring often.
Add the sugar, red pepper, cumin and cook over low heat for 10-15 minutes.Season with salt and pepper.
Sprinkle fresh cilantro and set aside.To make the shrimp:In a bowl, combine the olive oil, the cumin,onion powder, paprika salt and pepper.
Add the shrimp, stir to coat and refrigerate for 15 minutes.eat a grill over medium-high heat.
Remove the shrimp from the marinade and discard the marinade. Thread the shrimp onto skewers. Arrange the skewers on the grill and cook for 2 to 3 minutes per side.
Serve immediately with the mango sauce on top or the side.