Here's why:
1. Complex System: Fuel injection systems in modern vehicles are electronically controlled and precisely calibrated to ensure optimal fuel delivery, engine performance, and emissions control. Modifying or tampering with these systems can lead to unintended consequences and potential damage to the engine or other components.
2. Emissions Compliance: Modifying the fuel injection system can affect the vehicle's emissions output and may cause it to fail emissions testing required for registration and road legality in many jurisdictions.
3. Limited Gains: While some aftermarket modifications or tuning solutions may claim to improve fuel economy, the actual gains achieved are often minimal or may come at the expense of other performance aspects or reliability.
4. Professional Expertise: Modifying fuel injection systems requires specialized knowledge, tools, and diagnostic equipment. Attempting such modifications without proper expertise can lead to more significant problems and potentially unsafe conditions.
5. Warranty Issues: Modifying the fuel injection system may void the vehicle's warranty, leaving you responsible for any resulting repairs or damages.
6. Fuel Quality and Vehicle Usage: Fuel efficiency depends on various factors such as fuel quality, driving habits, vehicle weight, tire pressure, and overall vehicle condition. Focusing on proper maintenance, using recommended fuel, and adopting fuel-efficient driving techniques can yield better mpg gains without modifying the fuel injection system.
7. Consult a Professional: If you're interested in improving fuel economy, it's best to consult with a certified mechanic or automotive expert who can assess your specific vehicle and recommend safe, effective, and emissions-compliant methods to achieve better mpg.
