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Old 03-19-2007, 09:53 PM   #1
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Default Logged Wideband input for 95-95 Vin 1 with TunerProRT

This is in addition to the thread I created here..

http://www.bonnevilleclub.com/forum/...ic.php?t=66666

I am using a 94-95 Bonneville OBD1 PCM #16183247 (with a 2000 L67)

Well I got my innovate LC-1 Installed and hooked up. The Wideband is a 0-5v output. Well it turns out that I disabled my EGR and that just so happens to be... You guessed it, a 5v input. Well I gave it a shot.

I used the ALDL byte value 35 and pinned it into the pcm at BF12. The wideband is set from 7.35-22.39 on the 0-5v scale.

The equation I used was X*0.058980 + 7.35

I haven't logged yet with the XP cam so I wanted to check some things out before I really revved the hell out of it. As you can see I'm still very rich.



I just wanted to share.
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Old 03-19-2007, 11:51 PM   #2
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Wanna translate that into english?
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Old 03-20-2007, 12:47 PM   #3
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So are you saying that you are able to log the wideband using the disabled EGR circuit?
This I'm guessing since most pre OBD2 tuning software dosen't have a wideband input?
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Old 03-20-2007, 01:31 PM   #4
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95nsSTA, thats exactly what i'm doing. Rather than using the input on the PCM for the EGR valve, I'm using it as a wideband input. I then recalculated the formula to read the AFR instead of EGR position.

I didn't have any other way to plot the AFR against the RPM, timing, TPS, etc. This offered me a solution. A wideband is pretty much useless if you can't plot it against the other vitals. Since I only have 1 serial input on my laptop, this was a way to do what I needed.

I'm not sure if there are many people scanning/tuning 94-95 cars but this might be helpful to someone.
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Old 03-20-2007, 10:45 PM   #5
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Wow thats pretty neat.
I'll have to book mark this for later.
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