[Fluke]

I've just finished fitting my AEM wideband sensor and gauge. At idle and after warming up I am seeing about 15.2 on the gauge does this sound about right?

 

[Ian]

When fully warmed up mine fluctuates between 14.7 and 14.5 .

Ian

 

[Road&ster]

Fluke, is your car bone stock? or have you got some sort of aftermarket ecu fitted? and where did you put the wideband O2 sensor?

 

[Fluke]

My car has an M45 supercharger and a crank overlay. Its currently running with a Powercard Pro and an MSD, I have an emanage that I'm about to put on.

 

[Road&ster]

15.2 sounds about right, it's not a million miles off what it should be. fwiw I have emanage blue and the AEM UEGO wideband and my AFR at idle pings around from low 14's to high 15's.

 

[Fluke]

15.2 sounds about right, it's not a million miles off what it should be. fwiw I have emanage blue and the AEM UEGO wideband and my AFR at idle pings around from low 14's to high 15's.

Thanks

. I just need to fit the emanage now.

 

[GaryR]

It should dither any thing from 2 to 3 times a second up to about 6 seconds either side of the value indicated. The value should as others have said be around stoich 14.7. If yout get an exceptionally slow dither or no dither it is a sign the your O2 (narrwoband) is past its best.

 

[Fluke]

It should dither any thing from 2 to 3 times a second up to about 6 seconds either side of the value indicated. The value should as others have said be around stoich 14.7. If yout get an exceptionally slow dither or no dither it is a sign the your O2 (narrwoband) is past its best.

No you are correct.

It flickers back and forth either side of 15.2.

 

[CRAIGO]

My car with the stock ECU and the second output of the LC-1 controller simulating a NB sensor saw datalogs that fluctuated between high 13's and low 16's which is perfectly acceptable (the stock ECU is aiming for 14.7:1). Remember that the force of the exhaust gases is at it's weakest while at idle so the odd spike either lean or rich is nothing to worry about and it's also why your datalogs may seem incosistant with +/- 1 AFR point around stoich while at idle.