08-07-2013, 10:37 AM
HAHAHA The oxygen sensor monitors exhaust gas oxygen content for the purpose of fine trimming fuel correction. The V.E. map (volumetric efficiency) also known as fuel map, has a modifier map to compensate and provide stoichiometric combustion. The oxygen sensor toggles between 0 and +1 volt. It toggles precisely and sharply at 1.0 lambda. 1.0 lambda for gasoline is 14.7afr. The ECU trims fuel while in closed loop operation exclusively at low throttle angles, input from throttle position sensor feedback. Closed loop mode is determined by a few different things. Engine temp, throttle position, and sometimes many others. Full throttle always is open loop, except for some awesome (aftermarket and high end OEM) fuel systems with a wide-band O2 sensor and specific WOT closed loop fuel control. A single wire sensor does this with one signal wire. A three wire sensor has a heater circuit to improve performance and quicken response. A four wire sensor has a heater and reference ground. These types are known as narrow band or trim type, because they only have a small range of operation. Wide band oxygen sensors are a whole different ball of wax. They are used in some oem's but not quite as much. So there you go. Don't put a eliminator on your bike. They are useful to imitate a cat converter on an exhaust system that no longer has one, and is obd2, to get rid of the check engine light for catylist inefficiency. Don't put one on your bike. Also FYI the eliminators have a timer circuit on the output to simulate cat warm up before indicating lean output. The eliminators for "performance" you get on the internet are horse crap. Don't put one on your bike.