Throttle blips will occur downshifting either in Manual Mode Sport or even Normal mode. It's more evident in M-Mode and Sport as the engine revs are much more responsive. You have to definitely be in M-Mode and Sport and be decelerating at a rapid constant speed for the throttle blip to be strong. You can get it to blip when you're slowing down fast for a freeway offramp or just simply at a red light.