Get Mazda Fuel Delivery System. Replace Mazda Electronic Fuel Injection & Mazda Direct Fuel Injection. Explore Mazda Fuel Injection Ecu. Maintaining the fuel injection system in your Mazda is crucial for optimal performance and fuel efficiency. Regular cleaning and inspection can prevent clogs and wear, with symptoms like poor acceleration and decreased fuel economy signaling the need for replacement. To extend its lifespan, use high-quality fuel and timely replace fuel filters. When choosing a new fuel injector, consider the two main types—throttle body and multi-port fuel injection, each offering distinct advantages in fuel delivery precision and engine compatibility. Always opt for OEM or top-grade aftermarket options to ensure material excellence and seamless integration. Proper installation is key, so follow manufacturer guidelines or seek professional assistance to ensure your Mazda runs smoothly.