Place the first five ingredients in a food processor; cover and process until finely chopped. Add the lime juice, sugar, tomato sauce and lime zest; cover and process until blended., Transfer to a large bowl. Add the salmon; turn to coat. Cover and refrigerate for 30 minutes., Drain and discard marinade. Lightly oil the grill rack. Place salmon skin side down; grill, covered, over medium heat for 10-14 minutes or until fish flakes easily with a fork. Serve with salsa and lime slices if desired.