I've heard chatter about some newer car models incorporating a throttle "sound effect" during acceleration. I noticed a more pronounced throaty sound when in Sport S & Sport S+ modes. Does anyone know if this is the actual sound of the boosted Sport mode acceleration or is there any truth to an artificial throttle sound effect? If so, any insights as to how it works? I typically don't use the Sport modes but had to ask as the difference throttle sound was noticeable.