I am looking into a Wideband lambda meter that has a simulated Narrowband out & a Wideband Lin +/- out.

My question is am I correct in thinking that the simulated NB will work the same as the OEM sensor NB info if I connect it to my stock ECU & when I get round to the MoTec install will I be able to use the Wideband Lin +/- out from the meter to the MoTec M4 box.

Cheers,

Daz

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ST205 WRC #0002249

Don't wideband lambdas have a shortish lifespan though? Didn't think it was a good idea to have them permanently hooked up?

Cheers,
Mark

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Mark - 94 Red Jap ST205 WRC - Gone but not forgotten
'06 Blue Merc E320 CDi v6
'89 Mica Blue MR2 Mk1b restoration project
"Don't make me come over there"

From what I understand that is only certain sensors.

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ST205 WRC #0002249

mark - I'm lead to believe that the lambda sensors have "evolved" with time. Seems that these are being fitted as a matter of course in general production cars nowadays e.g. Landrovers, Civics

Think the sensors have dropped massively in price when compared to the "good old days", and a wideband sensor I think goes for ~£50 nowadays

Krude - don't think you will be able to use a wideband with the stock ECU since the voltage swing is ~5V vs a stock one which is ~1V.

Fitting a wideband to the stock ECU would be fairly pointless. Also think fitting one to the MoTeC is a bit pointless aswell - I'd rather buy a wideband kit for measuring and recording AFRs, believe you can datalog this info into the MoTeC

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Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
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Turbocharging - the replacement for displacement

Daz,

I think you are right

If the WB control box has a NBSim (Narrowband Sim) output, as many do, then you can indeed run this into the stock ECU

Kris what my thinking was that until I get my MoTec installed (Which seems to be slipping time scale wise vastly) I was going to install a WB sensor & plug it through this meter box, the meter box does logging & real time AFR display to a clock or LCD unit & also provides a simulated NB output that I was hoping will hook up to the OEM ECU pins.

Here is the tech detail on the NB Sim for the meter, looks interesting.

“The NBsim output is designed to be compatible with the raw output of a Bosch LSM-11 sensor. Refer to this eXcel spreadsheet for the graph of this default NBsim vs AFR. Note that the curve is for a narrowband sensor.
NBsim is produced by the onboard microcontroller using a 10 bit PWM A/D converter (with two pole filter), and a 65 word lookup table with linear interpolation. Unlike WBlin, a range from 0 up to 5 Volt (single ended, not differential) output is available. The default NBsim 0 to 1 volt range reduces the number of possible steps to around 200 (~5 mV per step).
As NBsim can re-programmed it is possible to do a number of interesting things such as fooling the engine's ECU (if equipped with a NB sensor) into running richer or leaner than it would do otherwise.”

Cheers Steve, I think I might jump in at the deep end with this meter & sensor

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ST205 WRC #0002249

I run the denso ecu/MS, using a LM1 , from the wideband sensor..

As Kris stated, most have the electronics to enable narrow band from, wide band sensor.

However there seems some variation to sensor rise rate ratio, compared to others, some amount of tweaking is required..for the denso, i think i posted my findings about this..


I have used two sensors since the install. The 1st sensor failed due to high temp, the second has run perfect since, being used daily.

some amount of adjustment can be made to the denso, before it reports an error code.

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Black UK 96 205 shed with heater full on telemetry.

project six million dollar 185, faster, stronger, lighter than before.

Im going to fitting a LSM-11 wideband sensor on mine does anyone know of a straight forward plug in lamba reader for this. I.E a dash mounted display.
Many thanks
Hutch

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Please take your nails out of my dash..........501.1 Whp

Go here & look at the products section http://www.innovatemotorsports.com/

Or here looks like a complete package http://www.innovatemotorsports.com/xcar ... 252&page=1

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ST205 WRC #0002249