WHO KNOWS CARB TECH UPDATE

When convenient, weld an O2 bung in the exhaust. A wideband can be after the collector, even a temp insert up the tailpipe. A regular O2 sensor needs to be close, where still hot, so one in each bank. Wideband kits are now affordable. Otherwise, you are "flying blind". Old guys rely on looking at the tailpipe or viewing spark plug color, but not as quantitative. Also need a pressure gage at the carburetor feed. If >5 psig, the pressure might be forcing the float needle open and flooding the carburetor.