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Old 01-28-2006, 07:18 PM   #1
Legacy777
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1990 Legacy & 97 OBS
AWD 6MT EJ22T AWIC Swap

Default Zeitronix WB O2 Install

Got it installed last night, and just wanted to say that the install was pretty easy, and everything's working well. Definitely the best bang for your buck WB.

One question I did have, do you have to use their boost sensor, or can you tie into the factory boost sensor?

here's pics
http://www.main.experiencetherave.co...ges/zeitronix/

Here's a run I did and logged.
http://www.main.experiencetherave.co...nix/wblog1.xls

One last thing. I emailed Zeitronix and asked for the equation for the WB. I'm going to log the voltages with my perfect power, and when I dump everything to Excel, I can use the equation, and convert the voltages to AFR's.

Here's the equation:
AFR = -0.3481V^6 + 3.4583V ^5 -12.813V^4 +22.269V^3-18.043V^2 + 7.4273V + 8.8711

Here's an excel spreadsheet that compares the look up data provided with the unit, and the equation. Once you get above a certain point the equation get's funky and turns negative. The display of the Zeitronix logger doesn't go above 21 AFR, so I just stopped at that spot.
http://www.main.experiencetherave.co..._afr_graph.xls

Josh
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Old 01-28-2006, 09:01 PM   #2
DonkeyPunch
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Cool, bang for the buck you say, where did you get it, and what $$$

DP
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Old 01-28-2006, 10:57 PM   #3
WolfPlayer
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If you want/need to log boost and/or EGT then get the Zeitronix. Definitely a great deal. However, if all you want is AFR then buy the Innovate LC-1 Wideband. The LC-1 is only $199.

t
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Old 01-29-2006, 12:38 AM   #4
Legacy777
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Quote:
Originally Posted by DonkeyPunch
Cool, bang for the buck you say, where did you get it, and what $$$

DP
http://www.zeitronix.com/Products/zt2/zt2.htm
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Old 01-29-2006, 12:39 AM   #5
Legacy777
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Quote:
Originally Posted by WolfPlayer
If you want/need to log boost and/or EGT then get the Zeitronix. Definitely a great deal. However, if all you want is AFR then buy the Innovate LC-1 Wideband. The LC-1 is only $199.

t
I wanted the Zeitronix because it had a simulated narrow band output for the ECU. That's another reason I went with it.
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Old 01-29-2006, 07:33 PM   #6
kgb
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Check the MegaSquirt/MegaTune bundle which has an A/D lookup table for the Zeitronix's non-linear wideband output (8 bit resolution). I don't know if another 3.5bar boost sensor would work since their controller is calibrated to that (and it will only go down 25.5inHg Vacuum) - I wouldn't bother with logging their simulated narrowband output since it's almost like a switch right around 14.7 - on my Link, just a tad off I get readings of 0.09V on the lean side and 0.91V on the rich side. If the PerfectPower can take up to 3-4V just use the wideband output
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Old 01-30-2006, 09:38 PM   #7
Legacy777
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Default

I'll take a look at the megasquirt.

I had planned to use the perfect power to modify the MAF signal for fueling. But I still need the narrow band for the stock ECU. The perfect power 6 won't accept a wideband input. It's a shame too. I have the wideband output hooked up to the engine temp sensor on the perfect power. The voltage is displayed on the screen, however it's not displayed in the data log. If it was, I could just use the equation and come up with AFR's

I'm finding the PP 6 to be a little on the limited side as to what it really can do. That in combination with the fact I'm getting intermittant stumbling/hesitation (and I'm not the only one) I'm probably going to be looking for an alternative EM that works with the OBD1 ECU's.
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