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  1. #1
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    Jeff
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    Default Question about lc1 wideband wiring

    Hey guys, I have a question for those who have used the lc1 wideband. I have the wideband 99% wired up, but I just realized analog one and two are different. I was hoping to run one analog to a gauge, and the other to the pcm via the AC pressure sensor. It looks like analog one only reads as a narrw band would, is it possible to split the analog 2 so I can read afr on the gauge and read it through datamaster?

  2. #2
    The FABRICATOR!


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    I was thinking the lc1 has its own gauge output separate from the analog outputs. If not, you can hook it to your pc and configure both analog outputs to 0-5 volt
    Chris
    1985 Monte Carlo SS
    Mods: 9:1 383 LT1, Ported Trick Flow heads, D1SC Procharger, 4L80E, 3.50 9"
    Check out the M122 MCSS build thread here!

  3. #3
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    This one I'm installing does not have a specific gauge output wire. Would I do that using the provided disc?
    I've split the output wire and run it to both spots, I don't have the bung welded yet though so I cannot test it yet.

  4. #4
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    As shipped, Analog 1 is set up for 0-1 V narrow band emulation; Analog 2 is set up for 0-5 V wide band. Both can be reprogrammed in the tab screen with regard to voltage limits and shape of the curve. Copy the data in the boxes on the factory Analog 2 settings to the boxes in Analog 1. I think the Advanced button allows you to change the shape of the curve. Then you will have two 0-5 V outputs. I wouldn't think wiring two devices to one output would produce satisfactory results. The combined impedance of the two devices could alter the apparent output voltage..... just a guess.
    SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.

  5. #5
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    ^ thats just bout what i was goin to say and what i plan to do with mine
    Kyle

    just ur everyday slow LT1. wanna try her out?

  6. #6
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    Thanks for the reply guys. Since I have it wired already, I'm going to test how I've got it now with the split wire. I'll get back to you guys with the results

  7. #7
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    Finally got the car together, it's showing between 14.5 and 15 at idle, so I'd say it's working as it should having the one output split

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