WBO2 - lost reading under boost.....

[Pet]

Hi, I have a problem when I am under boost, I lost reading from WBO2 as you can see from picture. Do you know, where should be a problem ? The sensor is about 2years old and was running with LC1 kit. Also sensor is about 50-60cm far from turbo, so imho there is no problem with overheating. Maybe I registred, when Lambda was too low, about 0.75 (I am tuning VE maps now), then the reading was canceled for some time, then was recovered again.
Thx for the reply.

[GintsK]

LC1 ?! On VEMS? Why?

For LC-1 it is normal to loose signal when it needed under load. Not good product.

[Pet]

No no, I am not using LC1 with VEMS, but only sensor, which was working with LC1 (on Megasquirt) before. Now is connected directly to the VEMS.. In normal (small boosts and <100kPa area) conditions is reading ok.

[rob@vems.co.uk]

Do you know anyone with a sensor you could try a test on?

[GintsK]

Hm. You use AFR(WBO2) channel. It is calculated (is it cofigurated? How?). What shows Lambda channel, which is taken directly from ECU?

[Pet]

Lambda channel goes directly from VEMS, AFR channel is calculated by Megaloviewer...
So here is my WBO setting, should be here something wrong ?



or I tried yesterday this setting (default WBO setting from 1.073 full package), maybe it was better, but my ntb battery was low, so I'll log more data today.

[Pet]

So maybe it's a litlle bit better with WBO settings nr. 2, but still after some time in boost goes Lambda reading to the hell. Next week I'll try another sensor....

[rob@vems.co.uk]

Hang on, you're using an old wideband on a VEMS ECU?  (This is the forum for the gauge).
Well first off if you didnt use the setting defined here: http://195.159.109.134/vemsuk/forum/index.php/topic,55.0.html
You won't be getting correct readings - and may have damaged the sensor's heater.
Plus the calibration will be way off.
And you cannot calibrate a dirty sensor.
The calibration value defines the level of accuracy away from 1.0lambda so with the correct settings and a good sensor, that figure should be correct.  The rest should just be considered noise.