[jimbo01]

I have a fast fuel injection installed on a 427. The o2 sensor was installed in the pipe per the location Backdraft provides. The engine ran rich all the time. I relocate the sensor to the header and now the engine runs as it should. I discussed this issue with fast fuel and 8 stack people. All I could find out is that the sensor is so far from the head it does not work. I did not have to reprogram the system. Just moved the sensor and the engine performed perfectly.