What you will find here: Intended to display minor modifications to my Westfield SEi, this blog now witnesses the two year rebuild (and more) after a major crash in October 2011. Have fun and feel free to add a comment at the end of any post.
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Saturday, March 29, 2014

Lambda practical (5)

Good weather, cabling all done, timing checked ... here we go !
The AFR target map, as the name suggests, is needed to define which level is expected relative to load (throttle position) and engine speed (RPM). The control mode is set by selecting the cells, the + and - keys are needed to switch between open/closed loop and adaptive. Save this map on your desktop and then transfer it to the ECU.
Requirements to be met are set in the closed loop dialogue. While driving, the live adjustments screen displays all the data on one screen. You see in which mode the ECU operates and can compare the AFR target with the real AFR actually measured by the lambda sensor.
A short drive proved that the ECU now controls the injection timing relative to the AFR target. Next time I want to check whether the fuel consumption is better now.
Cheers.

2 comments:

  1. Are you running narrowband?
    Did you consider, do you see issues with running 14.7 across the entire map - i.e. on normal road use would you feel that in the driving?

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    Replies
    1. No, wideband in closed loop, target is 14,7 in lower rev range up to 12,6 in higher rev range for best performance. You feel differences in fueling map and adding fuel in accel mode, response to throttle a.s.o.

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