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6 x Wide Band Sensor Setup


Timboj

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Hey guys, doing a little planning for my build (12:1 CR, S/C, E85). I already have a Haltech WB2 monitoring the two banks at the collectors.

I was initially going to install a Haltech TCA8, to fine tune/monitor individual cylinders, but I realised for about the same price as the amplifier and sensors, I could just purchase 2 additional WB2s and run one sensor per cylinder (and blank the collector bungs).

I'm just wondering how this looks in PC Link? In this configuration, for CLL do you pick two cylinders to operate from (including LTT) and then manually adjust individual cylinder trims? I suppose you could cycle through five sensors relative to cylinder one to determine the deltas?

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You wont be able to do individual cylinder lambda with the Haltech widebands as they will all have the same ID.  You will need different ID's on each lambda.  

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As in, one would need an additional 4 single-sensor (like the 125-1000) controllers? Or 6 single-sensor controllers to achieve this?

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The WB2 can only ever send out two unique IDs. No matter how many of them you try to plug in, still only the two IDs, can't be reprogrammed. Haltech is VERY limited currently in their CAN configurations.

You'll need additional controllers which can be programmed to send unique IDs via CAN. The Link CAN Lambda definitely can be programmed to be one of 8 IDs, so you could keep your current WB2, and add 4x more Link CAN modules.

Not sure whether other controllers like the AEM X-Series can be programmed with different IDs, or if they're just as limiting.

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Thanks for the clarification. For the price I'm definitely back to EGT instead.

I assume this (in the WB2 instructions) is being handled by the Haltech ECU then, and not by the controllers?

 

Screenshot_20240509-175024.png

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Ahh, yes, the good old Haltech "A", "B" choices.

So possibly it can be changed to one of 4 unique IDs, but you'll likely need a Haltech ECU and ESP/NSP software in order to make the change... without that, you're stuck with all of the units as "A".

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The Haltech WB's output an emulated Link CAN Lambda message and then their own proprietary message for use with Haltech ECU's.  As far as I know the "device ID" only applies to the Haltech messages and you cant change the ID's that the emulated Link lambda messages use.  

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In theory yes, but I had a vague recollection they needed to be sent the calibration data every startup, but I havent touched one since way back when they were in an aluminium case so I might be mixing it up with some other device.  If you already have one we can try setting it up this way to see if it works before committing to more.  You would still need someone with a Haltech ecu to reprogram their ID's initially however.  

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Thanks for the support Adam. Yes I've had one running in my setup for a while.

Let me know what I need to do for manual setup and I'll jump on it.

The impression I got from Haltech is it's a permanent setting on the controller but I can confirm as well.

 

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Go to your CAN setup, change the Link CAN Lambda channel to "Receive User Stream **", and change ID to 688. So it will look something like below.

5m57twT.png

 

Then go to the Streams tab, click on the stream number that you have chosen above, then click load stream, load the .lcs file attached to this post.  It should look something like below with the stream file loaded.  

CfxgXq0.png

Apply those changes, do a store and cycle ign off/on then have a look if lambda 1 & 2 are reporting anything.  If not have a look at CAN AN10 to see if the diagnostic code gives any clues.  I have a vague feeling they may need an RPM signal from the ecu to start up, but dont have any info on that.  

Haltech WB2A Use ID 688.lcs

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