The document compares and contrasts MPFI and DTSI fuel injection systems. MPFI stands for multi-point fuel injection and involves injecting fuel at multiple points to achieve more uniform air-fuel blending, improving mileage. DTSI is digital twin spark ignition and involves two spark plugs per cylinder for better combustion. DTSI provides faster flame propagation, more complete burning of fuel, higher efficiency and power compared to traditional single spark plug systems. Both MPFI and DTSI improve engine performance over traditional fuel injection systems.