I didn't know that hole was threaded. :-) Anyway, I plan to keep EGR functional. All components of it are working on my existing 1bbl setup except for the actual venturi signal from the carburetor. So I expect it should work OK with the new carburetor. I have the coolant temperature control, where the thermostat on the radiator blocks the vacuum signal when the coolant is cold. But I don't have any timer system that would use the now-missing air charge temperature sensor.
