Thank you for your reply, measuring EGT is very good idea I will adopt (as a way of double checking for leaned mixture) however it wouldn't give the accuracy and response I would be looking for as a feedback for my fuel injection project.
I have been thinking of dropping the narrow band sensor...
I have a two stroke Yamaha motorcycle and I wish to fit a narrow band lambda sensor to the exhaust with the intention of monitoring air/fuel ratios and eventually designing and making a simple closed loop fuel injection system (with some open loop capabilities, until the sensor warms up or at...