Air/fuel ratio sensors/measurments, lamda sensors

Has anyone used exhaust gas oxygen sensors for tuning, preferably the wide band kind.

If so, what did you use and what is your experience?

/Mikael

 

supposedly you can take a cheapy one wire o2 sensor and a realtively inexpensive rich/lean guage from either summit or jegs and your good to go... supposedly.

-J

 

I have a cheap one on my chevy 1 wire from saab(free from the junkyard).and it´s working great,aha du kan svenska så mycke enklare de blev du kan använda en voltmätare att läsa av med,ja har ett diagram nånstans som jag kan leta fram om du vill.annars så kan du bygga en sjäv med delar från mickrokit(bus enkelt)har gjort en själv med 10 lysdioder.

 

free sensor plus cheap voltmeter, thereya go! (Dont ask me how I can read swedish...)

 

The problem with the narrowband sensors (1-4 wire) is that they are not very linear and have a very sharp shifting point at the stochiometric A/F ratio 14.7:1.
They will tell you rich or lean but it's very hard to know how far off you are.

A 5-wire, wide band sensor has a much more linear output but needs much more sophisticated electronics to run it.
There are a few wide band tuning devices that are not that expensive and give the specific A/F ratio such as Techedge, Lamdaboy, Innovative Motorsports.

I was wondering if someone had used any of them and what their opinion was.

 

BTTT

 

Does the Lamda sensor warn you about where the lesbian bars are?

 

...only if you stick something else up your tailpipe!

 

Better not throw too much RICE around

But when We are tuning are Stand-alone Fuel Management systems (Haltech E6K, E6X and Microtech LT-8's) we use either the PLX-300 M-300 http://www.plxdevices.com/products_M-Series-Controllers.htm
or the innovative motorsports LM-1 http://www.innovatemotorsports.com/products.php

 

I personnally use the tri-lamda sensor...

 

I'm not sure if I am on the right track about air/fuel measurements, but on our Bonneville car and a Top Alcohol Dragster we use "Exhaust Gas Temperature Probes." They are hooked to a 10 channel Data Logger and downloaded after each run. Tuning either the carb (Bonney car) or the injectors on the dragster is a function of optimum temps at the exhaust ports.

Not sure if I'm on the "same page" as you fellows!!

 

I've got a wide band and it is amazing, A/F to the nearest tenth in digital display. Mine is the last of the older with the Honda sensor. The new ones with the Bosch sensor are cheaper and there's one out there that will also datalog. http://wbo2.com/