Narrow band ? wide band?
#1
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Narrow band ? wide band?
Just wanted to know the difference i thought that one gave an exact readout digitally and the other told you if you are rich optimal or lean. just found out that im wrong help me out guys!!!
#2
The short of it, narrow-band is only accurate very close to 14.7:1 A/F, therefore its signal is "digital-like", your either rich (<14.7) right on(=14.7) or lean (>14.7) the O2 sensor can't read accuratly how rich or lean you are. Wide-band is accurate through a large range, so its signal is more "analoge-like", it will tell you if your lean or rich and by how much. You can compare a narrow-band to an shift light, it will only tell you your past the redline, and a wide-band is more like a tachometer, it will tell you if your over the redline and by how much
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Originally Posted by BirdsOnly
The short of it, narrow-band is only accurate very close to 14.7:1 A/F, therefore its signal is "digital-like", your either rich (<14.7) right on(=14.7) or lean (>14.7) the O2 sensor can't read accuratly how rich or lean you are. Wide-band is accurate through a large range, so its signal is more "analoge-like", it will tell you if your lean or rich and by how much. You can compare a narrow-band to an shift light, it will only tell you your past the redline, and a wide-band is more like a tachometer, it will tell you if your over the redline and by how much
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Originally Posted by BirdsOnly
Why ? I didnt think I was way off??
like good, great, right on, exactly, good point, just what I would say, correct, nicely put, etc.
This is the second time this has happened today! Doesn't anyone read the icon?!
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Widebands are much more accurate giving you an accurate reading all all throttle levels (idle to WOT). Widebands also work in both open and closed loop...if I remember right open loop is approx from 0 to 70% throttle where the ecu is constantly reading & adjusting very quickly (within 20% of stock settings) your o2 sensors keeping your a/f ratio at approx 14.7 to 1 for max fuel economy. At 70% to 100% throttle the ecu goes into closed loop where the amount of fuel is predetermined by the stock programming to approx (13 to 1 for max power) and not adjusted by the front o2 sensors.
The narrow band can only give a semi accurate reading at 70%+ throttle as it will bounce back and forth from rich to lean many times per second in open loop. The wideband sensor will give a good semi-stable reading at all throttle positions & rpms.
Clear as mud right....?
To sum it up the wideband is the only realiable way to really see what a/f you are running at. You are pushing your luck tuning from a narrow band or an egt gauge. I have done both the narrow band & egt tuning and I was lucky...be smart and buy a wideband unless your motor is worth less than a $300 wideband.
The narrow band can only give a semi accurate reading at 70%+ throttle as it will bounce back and forth from rich to lean many times per second in open loop. The wideband sensor will give a good semi-stable reading at all throttle positions & rpms.
Clear as mud right....?
To sum it up the wideband is the only realiable way to really see what a/f you are running at. You are pushing your luck tuning from a narrow band or an egt gauge. I have done both the narrow band & egt tuning and I was lucky...be smart and buy a wideband unless your motor is worth less than a $300 wideband.