Resumen

During rapid changes in throttle position, your main fuel map alone isn’t enough to maintain a stable air fuel ratio. This can cause hesitation, bogging, or poor response to fast throttle inputs. In this webinar, you’ll learn why an engine needs additional fuel during transient throttle input and the correct approach to configuring and tuning acceleration enrichment. Using a Nissan 350Z with the Link G4+ platform, you’ll see how to tune enrichment sensitivity, clamp, hold, decay, and cold correction effectively. The knowledge shown isn’t only specific to this car and ECU.

This lesson covers the core physics of fuel film wall wetting (X-Tau), tuning techniques for crisp engine response, and the common mistakes that lead to poor transient enrichment calibration. If you want sharper throttle response on your own ECU tuning projects, this will give you the confidence to set it up using known principles rather than guesswork.

You can find the X-Tau explanation via the MegaSquirt manual Andre mentioned here.