I have a dc 4-1 header. It only has one o2 bung so i cut and slpiced the sencondary o2 sensor to the primary.. it ran fine for a long time about 8 mo. i got a hondata now the ecu throws a code two when ever i push the motor. I reset the ecu and no codes till i push the motor again. i checked for continuity between both o2 sensor pins at the ecu and there is. I replaced the o2 sensor and the code still comes up only when i push it.. can someone tell me the next step??