wideband lambda sensor

Re: wideband lambda sensor

feeds@kickapps.com (goldriver) — Thu, 17 Sep 2009 08:30:03 PST

Thanks for info Steve - the emerald holds 3 maps - max - mot - motorway eco

I am booking a rolling road set up with Dave Walker to config the maps once wiring job is finished

Re: wideband lambda sensor

feeds@kickapps.com (OldNoccer) — Wed, 16 Sep 2009 21:47:32 PST

Good enough for me - you wouldn't be able to do that on the normal Joseph Lucas (Prince of Darkness) system on a V8. Having a wide band is great to try and run it a tad on the lean side to get economy, it is less of a binary switch. I have a Holley system on a non-Marcos V8 and they need it returned to base to adapt it if I want wideband - but then as it is fully programmable then I could run multiple maps - e.g. a lean one for economy (and MOTs) and a max power map. Like a lot of these systems you can choose whether to run it closed loop throughout, or to go open loop at the top end, or even the bottom end. At the top end you know extra fuel is good for the engine - keeps it cool, at the bottom end they sometimes go open loop as the sensor may not be hot enough (though a lot are heated these days).

So the next question is you will probably need to get yours re-mapped, maybe it can multiple maps.

Anyway - you seem to have done your homework - I am probably...

Re: wideband lambda sensor

feeds@kickapps.com (goldriver) — Wed, 16 Sep 2009 19:52:59 PST

I am told by Dave Walker that you can wire a wide band lambda controller/sensor directly to the ECU and set the ECU to run in adaptive mode.

The ECU can be configured to read the 0-5v signal from the wide band lambda, and convert it back into an AFR [air fuel ratio] value. The ECU runs in closed loop mode adjusting the injection to maintain a target AFR. If certain conditions are met and the ECU has managed to get the fuelling to the AFR target it will record the fuelling change required. This fuelling change is...

Re: wideband lambda sensor

feeds@kickapps.com (OldNoccer) — Wed, 16 Sep 2009 19:19:17 PST

Does your ECU support it - as I thought the wideband's worked on a different electrical principle - like current instead of volts or summat ?!

wideband lambda sensor

feeds@kickapps.com (goldriver) — Wed, 16 Sep 2009 19:03:31 PST

I am thinking of putting a wide band lambda sensor to my 2L Turbo [Emerald ECU]. Has anybody changed their lambda sensor to a wide band and if so what difference did it make.