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EBL & WB show different values?

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Old 09-04-2007 | 10:23 PM
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EBL & WB show different values?

EBL and WB show different values by about one half point. EBL is showing richer, 12.2 compared to 12.7 LM-1 for instance. Innovate LM-1 re callibrated for free air, it still does the same thing. LM-1 is set for 0 volts =10 AFR and 5 volts = 20 AFR. EBL is set to same.
Any ideas?

I thought I remembered a thread that covered this but I can't find it now.
Old 09-04-2007 | 10:42 PM
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Re: EBL & WB show different values?

Hows it grounded? It could be a voltage bias on the ground, or some skewing in the ECMs A/D.
Old 09-04-2007 | 10:52 PM
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Re: EBL & WB show different values?

The LM-1 input is grounded through the power plug. The output (serial) is grounded to one of the ground lugs inside the EBL.
Old 09-04-2007 | 11:47 PM
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Re: EBL & WB show different values?

Check the input resistance of both the LM-1 and the EBL. If the EBL input differs from the LM-1 it will cause the WBO2 to read differently.
Old 09-05-2007 | 12:30 AM
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Re: EBL & WB show different values?

Originally Posted by junkcltr
Check the input resistance of both the LM-1 and the EBL. If the EBL input differs from the LM-1 it will cause the WBO2 to read differently.
What exactly am I checking the resistance of? LM-1 sensor input vs EBL chanel input?
Old 09-05-2007 | 02:21 PM
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Re: EBL & WB show different values?

The connection to the EBL should be from the stereo connector (3.5mm). Which ever of the analog outputs you programmed (1 or 2) should go to an ADC input on the EBL (0 - 7). The ground from the stereo connector will then go to one of the EBL GND terminals.

Select the channel and the WB type and range in the WUD preferences.

To double check things you can measure the voltage at the EBL ADC terminals. Then use this calculation to convert it to AFR:

AFR = (Volts * 2) + 10

So 2.75 volts will be 15.5:1, (2.75 * 2) + 10

RBob.
Old 09-05-2007 | 09:43 PM
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Re: EBL & WB show different values?

After some testing the LM-1 seems to be the problem, the analog out signal is inconsistant. I haven't figured it out yet but I'm working on it.
Rbob this helped me out much, thanks.
"AFR = (Volts * 2) + 10"
Old 09-07-2007 | 11:51 PM
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Re: EBL & WB show different values?

I'm still beating my head against the wall with this if anyone has any ideas on how I could get it working right?
Old 09-08-2007 | 12:13 PM
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Re: EBL & WB show different values?

One item may be the update rate. This can be set by the Innovate software. The fast update rate is typically too fast. Slowing it doen helps steady the output.

Not sure if that is the issue you are having or not. If after slowing down the update rate the Vout doesn't match the display, then something is wrong with the unit.

RBob.
Old 09-08-2007 | 09:30 PM
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Re: EBL & WB show different values?

Originally Posted by RBob
........ then something is wrong with the unit.
RBob.
I'm fairly sure you're right........Long story.....
A couple months ago I had a LC-1 and broke it. Cords got wrapped around my drive shaft and ripped them out of the unit. I just put it aside and bought the LM-1.........
Today after reading this http://www.innovatemotorsports.com/f...hread.php?t=34
I had hopes of getting the LM-1 to work right but to no avail.....
After that I took out the old broke LC-1 and fixed it, that was quite a job in itself. Now I have two WB up and running. I hooked up the analog out of the LC-1 to the EBL and learned the EBL in open loop to the WB value of 14.7:1 AFR while the LM-1 still shows about 13:1AFR. After that I switched the EBL to open loop and let it run while observing that the LC-1 still shows about 14.7:1. I think what I did is verify the LC-1's 14.7:1 value against the NB's 14.7:1. So it seems the LM-1 is all screwed up.
Does this sound right? I sure hope so it's driving me crazy.
Also thanks for everyones help with this!
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