sanad maghaireh Posted March 24, 2016 Report Share Posted March 24, 2016 hi everybodyi have honda civic 1.7 engine , i use Atom ecu as a piggyback , and its running right , but the RPM gauge and A\C still not working , can Atom alone make RPM and A\C work Of non-interference the OEM ecu ? or there are any setup for make the OEM ecu help the Atom ?thank you Quote Link to comment Share on other sites More sharing options...
Scott Posted March 29, 2016 Report Share Posted March 29, 2016 Hello,I believe you will need to install a pullup resistor for the Atom to do tacho output. This is because the factory ECU contains the pull-up resistor instead of the tacho gauge itself. Try installing a 1K resistor between +5V and the Atoms Aux output being used for tacho. Quote Link to comment Share on other sites More sharing options...
Simon Posted March 31, 2016 Report Share Posted March 31, 2016 The AC could be an issue as in some applications this is controlled via CAN which we won't have the information for. Quote Link to comment Share on other sites More sharing options...
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