Hesitation After Engine Braking – Lean Condition on Throttle Reapplication
Posted: Wed Apr 16, 2025 7:01 am
Hi everyone,
I'm encountering a hesitation issue when transitioning from deceleration to acceleration. During engine braking at approximately 2800 RPM, the ignition timing is around 12°, injector duty cycle is 0%, AFR reads 2.00, and the throttle pedal is at 0%. When I press the accelerator, between 2900 and 3100 RPM, the ignition timing increases from 31° to 48°, injector duty cycle rises to 8%, AFR drops to 1.30, and throttle pedal position reaches 24%. This results in a lean condition and noticeable hesitation during acceleration.
Has anyone experienced a similar problem or have suggestions on how to adjust the overrun fuel cut settings to prevent this hesitation? Any insights would be greatly appreciated.
The car is a 2014-2015 US Civic Si with a turbo setup, running on E85.
I'm encountering a hesitation issue when transitioning from deceleration to acceleration. During engine braking at approximately 2800 RPM, the ignition timing is around 12°, injector duty cycle is 0%, AFR reads 2.00, and the throttle pedal is at 0%. When I press the accelerator, between 2900 and 3100 RPM, the ignition timing increases from 31° to 48°, injector duty cycle rises to 8%, AFR drops to 1.30, and throttle pedal position reaches 24%. This results in a lean condition and noticeable hesitation during acceleration.
Has anyone experienced a similar problem or have suggestions on how to adjust the overrun fuel cut settings to prevent this hesitation? Any insights would be greatly appreciated.
The car is a 2014-2015 US Civic Si with a turbo setup, running on E85.