Ball State (7-6, 2-0 Mid-American) shot 55.6 percent from the field and outrebounded Central Michigan 36-24. Jeremiah Davis finished with 14 points, Franko House added 13, Sean Sellers 11 and Matt Kamieniecki 10 with 10 rebounds.
Turner, who has reached double figures in seven games this season, was 7 of 10 overall and sank all four 3-point attempts while dishing out five assists.
The Cardinals let a 10-point first-half lead slip in the second, but surged away with a 23-6 run sparked by three layups from Kamieniecki. Davis' lay-in made it 74-58 with 2:55 remaining.