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ARacer fuel trim question

ball_socket

Member
Joined
Nov 28, 2022
Messages
57
Location
Santa Cruz, CA
For those who own an ARacer ECU + wideband, the ECU has an autotune feature which samples AFRs and adjusts the basemap to target AFRs, but, my question is, does it also offer a live adaptive fuel trim feature that is intended to operate continually?

For example, if it is a hot day, or I ride to a different elevation, will this ECU recognize the difference in mixture and correct the injection rate in real-time?

Thanks.
 

ball_socket

Member
Joined
Nov 28, 2022
Messages
57
Location
Santa Cruz, CA
I think I may have answered my own question.

Page 38 of the "XTune User Manual" here describes wideband closed loop, which is exactly what I was looking for.

From page 25, you can also setup a table of fuel enrichment by engine temperature (assuming that means oil temp as clearly we don't use water). This could be useful for cooling 164cc+ big bores when not using an oil cooler.
 
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