Hondata

The 06-11 Civic Si has some basemaps with a checkbox for "Overrun throttle opening enabled" and some without. I prefer to use Map based calibrations to start from because a lot of cold air intakes have the MAF sensor before the breather tube to the valvecover. Using a MAF based basemap wouldn't work because there would be an air leak present. Is there a way to add in the checkbox or do I search for a basemap with one and work from there?

It is there for all the regular calibrations. If you want to use speed density then select the option in 'Fuel Table Type'.