Race Engine Forum UK

Hello,
I'm writing from Hungary, and I have a builded Punto GT 1.6.

The engine based on the 1.6 Sporting block (176A9000 code) and use the 1.6 head cylinder.
Other parts from a GT2 with the following modification:

- KKK K03/K04 hybrid turbo
- Piper Rally 280/258 camshaft
- Iveco Daily FMIC
- MegaSquirt II V3.03 Standalone Engine Management System
- LC-1 wideband O2 sensor
- 350ccm injectors
- HKS SSQV BOV
- Opened exhaust system

Some picture from the car:

Great to see you here!

That is one seriously shiny car!


G

I would like to stress that the LC-1 Wideband is not a very reliable sensor in order to use it for continuously monitoring AFR in closed loop.

It is OK for tuning as long as you calibrate it often and check that that it still reads OK (comparing its readings with a top end sensor).

kpsig wrote:I would like to stress that the LC-1 Wideband is not a very reliable sensor in order to use it for continuously monitoring AFR in closed loop.

It is OK for tuning as long as you calibrate it often and check that that it still reads OK (comparing its readings with a top end sensor).

Thanks your opinion about the LC-1 sensor, what do you recommend how often check the sensor?
Did you have wrong experience with this sensor?

Kranked wrote:

kpsig wrote:I would like to stress that the LC-1 Wideband is not a very reliable sensor in order to use it for continuously monitoring AFR in closed loop.

It is OK for tuning as long as you calibrate it often and check that that it still reads OK (comparing its readings with a top end sensor).

Thanks your opinion about the LC-1 sensor, what do you recommend how often check the sensor?
Did you have wrong experience with this sensor?

Yes, it seems that it regulargly shows richer AFR than real. It is also very sensitive (the Bosch sensor) to smog (due to rich mixtures) and needs very carefull cleaning.
If you feed megasquirt on a close loop with EGO correction, go to LM programmer and reduce the sampling frequency, for a beginning.

TO be sure, make a full comparison with a professional sensor.

Thank you for your help!
I use only bioethanol fuel which burn cleaner than gasoline so I think smog is less.
Yes, I use EGO correction so I will check the properties you said.