What are the pros and cons of flashing ECU to increase idle speed in the 8th generation Accord?
1 Answers
1.Advantages: Naturally aspirated engines can achieve a 5%-15% increase in power and torque, with the optimal torque point responding earlier than the factory settings. This helps resolve issues like gearshift shudder in small-displacement models during 1st to 2nd gear changes, resulting in smoother shifting. Turbocharged models can gain over 30% more power and torque. Factory turbo models typically activate the turbo around 1,800 RPM, but after ECU modification, the turbo engages at approximately 1,500 RPM, delivering torque earlier and broadening the maximum torque output curve, which improves fuel efficiency compared to stock. Modified automatic transmission models experience smoother gear changes and better power delivery. It also resolves many factory-unaddressed issues such as low idle speed, stalling tendency, engine knocking in specific ranges, and automatic transmission shift vibrations, effectively enhancing engine RPM. 2.Disadvantages: Requires higher-grade fuel, increasing driving costs. Improper ECU programming may reduce engine lifespan, trigger fault warnings, or cause unbalanced power output. Some models may gain excessive power beyond braking capacity, potentially lengthening stopping distances and compromising safety. Warranty implications: If dealerships detect ECU modifications, the vehicle's warranty may be voided.
