Narrow band ---> Wideband A/F metering

[xxraptor660xx]

I just wanted to know, if i was going to go from my pointless narrowband A/F meter to a WB02 meter, can i still keep my old gauge and just connect it to a WB02 sensor?
My narrowband sensor just goes crazy and the LED's on the gauge just jump from rich to lean constantly.
Thanks!!

 

[Calan]

No... Narrowband is 0 to 1 volt, wideband varies but is usually 0 to 5 volts.

With that said, just to screw around... I'm looking into maybe throwing together a voltage divider circuit and using a unsused linear output on my WB to drive my narrowband gauge

The cycling LED's is normal... but as the name states, it is a very narrow band and pretty much useless for tuning.

 

[xxraptor660xx]

Thanks tell me if that works

 

[dsm-onster]

well an lm1 wideband can be configured to output both a narrow band signal and a wide band signal. Also, further, both signals can be configured to operate w/ any voltage output you want.

The problem w/ you rnarrow band meter is that it doesn't have a numeric dial pointing where the a/f ratio is. An lm-1 has a lambda and a/f ratio digital screen on it.

This piece is more expensive than other units. So I'm not suggestign to get it unless you want to run a wideband all the time and do away with the narrow band. Considering the cost of o2 sensors on ebay, I don't think it's worth it to even do away w/ a narrow band sensor. You still need to use the narrow band input on your dsmlink if you're running that in normal closed loop daily driving or if not it is required unless you have a stand-alone. There's no reason not to have a cheap sensor there that is close enough to read the exhaust gases at the right time ( I had horrible issue running my wideband for narrow band due to how late the exhaust gases got to the sensor) and tough enough to handle the heat. I run my wide band and an ebay bought bech-arnley universal 4 wire.

Though if one can cheaply build a circuit for narrowband output to add to a much cheaper wideband and locate the sensor in the downpipe, then it would be just fine. I relocated my wideband to my downpipe for narrowband output and it cured all my "vascillating" fuel trim issues. But, I paid 25 bones (including shipping) for my narrow band. I just don't think it's worth it.