Voltage VS. Air/Fuel Ratio Charts for Stock K-Series PHO2S.

sander · Post by **sander** » Wed Apr 05, 2006 6:28 pm

Hondata,

Do you have the chart handy, Id like to chart to calibrate my wideband (Innovate) to read like the stock K series unit.

Thanks!

-sander.

Post by **Hondata** » Thu Apr 06, 2006 8:47 am

Which chart? There is no relationship between voltage and lambda for the RSX o2.

sander · Post by **sander** » Thu Apr 06, 2006 9:54 am

Hmm,

I would have imagined that the stock ECU (PRB) would have a voltage chart, to interpret the voltage readings in to Lambda values.

For example the PLX reads
0.00V = 9.99 AFR
5.00V = 19.99 AFR

or the FJO
.85 V = 9.996 AFR
1.20 V = 10.996 AFR
1.60 V = 11.995 AFR
1.95 V = 12.995 AFR
2.30 V = 13.994 AFR
2.50 V = 14.700 AFR
2.65 V = 15.994 AFR
2.80 V = 16.993 AFR
3.10 V = 20.0 AFR

Im just curious how Kpro intreprets the O2 signal to read AFR/Lambda off of the stock 02 unit if there is no defined relation ship between voltage and AFR/Lambda.

Thanks guys!

-sander

menfou · Post by **menfou** » Fri Apr 07, 2006 4:23 am

The stock PRB ecu not read voltage, but current.

sander · Post by **sander** » Sat Apr 08, 2006 8:37 am

Ok that was the missing link i needed.

Thanks

-s