Hello everyone,

im trying to log the A/F ratio from a Honda Civic B16a2 with a P30 ECU, im using Crome and i can log everything excepts the A/F ratio. Right now im using the stock narrowband of the car (i know this is not accurate, but i only want to test logging the A/F ratio, later i will buy a wideband).

My Crome configuration is in the image bellow:



Anyone knows why i cant get the A/F ratio data from the ECU?
The A/F ratio remains stucked in one value.

Thank you

 

I see the o2 voltage reads 1.49 volts, which is why it's staying pegged at 10.3 afr or whatever. are you sure the o2 sensor is good?

edit: wait what? I'm looking at your pic, and so much is wrong. atmospheric pressure at 1.7 bar? 4% duty cycle at 1500 rpm in neutral, idling, and at 324mbar? short term fuel trim at +58%?

either your map is waaaaaaaay off, or something is quite wrong there.

 

You're not using the correct datalog protocol. Or you have a bad ground. Or you have some plugs backwards.
Look at the datalog column. Anything in red means it's out of scope for logging AFR. but unless you live below the earth's crust there is no way any of that **** is accurate.
Read the manual in my signature. ALL OF IT.