| O2 sensor is useful for Wideband Tuning, or for Closed Loop FI functionality. The Single O2 Sensor Option in a header places an O2 bung in the collector at the 9 o'clock position. The Single O2 Sensor Option in a muffler is inside the bend radius (out of the way but accessible). The O2 Sensor x 4 Option in headers allows for individual cylinder monitoring. You do not need an O2 bung in both the header AND the muffler, but putting it in the muffler will be a problem if you switch to a stinger, so we recommend using it in the header! |
