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Wideband / ECU AFR readings innacurate???
Posted: Thu May 13, 2010 6:10 am
by blacksi76
I just installed my new NGK AFX , Fisrt off, I did it exactly as the manuel said, the yellow analog wire goes to ( in my case ) the factory O2 ( white C16 ) wire on my OBD2B harness, the brown wire is supposed to go to a ground....At first I wired the brown wire directly to the Neg battery terminal with the Black Ground wire, and it worked But I was getting diff readings on my laptop form what the guage said....at idle, the guage was reading 15.5-16AFR, and the ECU was reading 14.32AFR and wasn't moving much at all....when I give it a shot of gas both reading richen up at the same time but still both are off by 1.5 or so AF.....So I was told to Re-Wire the brown ground wire to a Sensor Ground at the ECU so I did, I routed it to an SG1 Green with white stripe wire at the ECU, hooked it up, started the car, and I got the exact same readings....Can anyone help me out???
Posted: Thu May 13, 2010 9:59 am
by Spunkster
Have you tried adjusting the voltage offset?
hey
Posted: Thu May 13, 2010 10:02 am
by blacksi76
Yeah I just figured it out....I was adjusting the Voltage offset, BUT I forgot to click upload to ECU so nothing was happenning...I have it set perfectly now...both guage and ECU are reading the same, thanks...
coolant temp ect stays the same help needed
Posted: Fri May 14, 2010 7:56 am
by jayking
just dropped this h23 turbo in the k1 wired the hole system and get 5v at the plug was wondering if it could be the computer runs ok but it does not move . any help would be great. changed sensor sill the same . first time with hondata s300. jay
Posted: Mon May 31, 2010 12:12 pm
by Siguy2k
So you just wire the 0-5V output to terminal C16 on ecu?
Posted: Mon Jun 07, 2010 9:27 pm
by Funbar
Has anyone else had to Change their Voltage offset nearly EVERY time they shut off and start up their car?
Mine is different every time.
Posted: Tue Jun 08, 2010 10:32 am
by newsoltsc
Funbar wrote:Has anyone else had to Change their Voltage offset nearly EVERY time they shut off and start up their car?
Mine is different every time.
Are you loading a different map?
When you save a calibration it saves the settings. So if you use a different calibration it will use that calibrations settings.
Are you saving the calibration after you put in the new voltage offset?
Posted: Tue Jun 08, 2010 3:27 pm
by Funbar
newsoltsc wrote:Funbar wrote:Has anyone else had to Change their Voltage offset nearly EVERY time they shut off and start up their car?
Mine is different every time.
Are you loading a different map?
When you save a calibration it saves the settings. So if you use a different calibration it will use that calibrations settings.
Are you saving the calibration after you put in the new voltage offset?
No, Same map.
I'm aware.
And yes, Saving and Uploading to the ECU.