Lexus IS Forum banner

1 - 9 of 9 Posts

·
Registered
Joined
·
1,798 Posts
Discussion Starter #1
What exactly is the difference between a wideband and a regular air fuel gauge? There is obvioulsy a big price difference, so does that mean a wideband is more accurate?
 

·
Registered
Joined
·
635 Posts
a wideband is an air/fuel gauge but much much more accurate. u can t tune with a narrow band meter.
 

·
Registered
Joined
·
820 Posts
the wideband tells you specifically your A/F ratio, while the normal gauge only tells you rich/lean condition.
 

·
Registered
Joined
·
2,602 Posts
For a more detailed answer, the wideband gauge reads a signal with a range of 0 to 5 volts; whereas a regular A/F gauge (also considered a narrowband) reads a signal voltage between 0 to 1 volts. Therefore, the resolution and accuracy of your A/F ratio is greater with a wideband. Hope that helps you understand it a bit better.
 

·
Registered
Joined
·
152 Posts
the wideband gives a linear output.... 0-5V so the curve is a line going at 45 degrees.... easy to interpolate

the standard 02 sensor is a 0-1v output and it is not linear. It has flat spot in the middle and that is why cars that use that output need to bounce back and forth between rich/lean at some frequency.

The technology to make the wideband became cheaper and now most cars use it, it gives better output so you can get better tuning and for OEM's that means better fuel economy.

-M
 

·
Registered
Joined
·
820 Posts
98mkiv said:
the wideband gives a linear output.... 0-5V so the curve is a line going at 45 degrees.... easy to interpolate

the standard 02 sensor is a 0-1v output and it is not linear. It has flat spot in the middle and that is why cars that use that output need to bounce back and forth between rich/lean at some frequency.

The technology to make the wideband became cheaper and now most cars use it, it gives better output so you can get better tuning and for OEM's that means better fuel economy.

-M

What i've heard somewhere is what ppl were calling "semi-wideband" not sure though. This was used on some oem applications.
 

·
Registered
Joined
·
1,833 Posts
lexusaltezza said:
What exactly is the difference between a wideband and a regular air fuel gauge? There is obvioulsy a big price difference, so does that mean a wideband is more accurate?
The voltage span of reading. A narrow band reads between 0-1V. A wideband puts that signal under a magnifing glass and reads 0-5V.

Edit: Very helpful when for tuning when used with a Boost/Vac guage & an EGT gauge.
 

·
Registered
Joined
·
1,833 Posts
aemjr said:
What i've heard somewhere is what ppl were calling "semi-wideband" not sure though. This was used on some oem applications.
Limited span widebands like the stock RSX Type S O2 sensor.

It is a wideband, but the reading span is not as broad. For example, say an Innovate WB O2 reads from 10:1-18:1. The semi-wideband may read from 12:1-16:1.
 
1 - 9 of 9 Posts
Top