1. Heat a large skillet over medium-high heat. Add olive oil to pan; swirl to coat. Add pork, curry, powder, and salt to pan; sauté 4 minutes or until pork is done. Let pork mixture cool slightly. Combine pork mixture, celery, pistachios, raisins, yogurt, and canola mayonnaise in a medium bowl.
2. Top each lavash with 2 lettuce leaves, 3 tomato slices, and about 3/4 cup pork mixture, leaving a 1/2-inch border around edges. Roll up wraps, and cut in half diagonally.