Want to learn more about how modern EFI systems work and how to tune them? Check out Christian Krahenbuhl’s (COBB Tuning Sr. Calibrator) article EFI 102 – Understanding EFI Processes Through Detailed EFI Sub-system Analysis on MotoIQ.com. This is the second of four EFI articles from Cobb Tuning and focuses on modern EFI Systems,  closed-loop control systems and how some of the basic calibration/tuning feedback systems are used.

To start back at the very beginning, read the first installment titled EFI 101 – Basic 4-Cycle Engine & ECU Operation and Tuning Rhetoric, also on MotoIQ.