Perfect air/fuel ratio?
03-16-2007, 08:20 PM
#21
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thats why i said a final fix....that's how im running 305cc injectors with the oem AFM. all it does is adjust the idle air mixture, regular cruising and driving it acts as it should.
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03-16-2007, 08:54 PM
#22
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Alright I just probed my stock oxygen sensor wire and i got -00.7 on the 200m Vdc setting on my digital multimeter. Only small fluctuations from -00.6 to -00.8
Is that good?
Now that I have the wideband where do I put the stock one wire oxygen sensor pick-up? Do I have to spice it into the wideband or can I leave it hang?
I will take the vortech out later and try that thing. Thanks for all the help.
Is that good?
Now that I have the wideband where do I put the stock one wire oxygen sensor pick-up? Do I have to spice it into the wideband or can I leave it hang?
I will take the vortech out later and try that thing. Thanks for all the help.
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03-16-2007, 08:56 PM
#23
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No, that sucks. Where did you probe the wire? At the ecu, or at the connector between the firewall and motor? Your car's running rich, so if it were reporting correctly, you would have shown .8 or .9 Volts.
I don't think you'll need to touch the vortec. Looks like your problem is a failed NB o2 sensor, or perhaps a failure in the wiring between the sensor and where you probed it. A new generic Bosch sensor is only $18.
I don't think you'll need to touch the vortec. Looks like your problem is a failed NB o2 sensor, or perhaps a failure in the wiring between the sensor and where you probed it. A new generic Bosch sensor is only $18.
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03-17-2007, 02:41 AM
#24
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What do you mean NB sensor? I just put in a WB.
I got the reading off of the wire runing from the motor to where it used to connect to the one wire oxygen sensor and now it is just hanging there. What should I do with it?
Should I splice it into the 4 wire WB sensor???
I got the reading off of the wire runing from the motor to where it used to connect to the one wire oxygen sensor and now it is just hanging there. What should I do with it?
Should I splice it into the 4 wire WB sensor???
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It came without directions?
03-17-2007, 06:21 PM
#29
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So, you just pulled the NB sensor out, and replaced it with your new WB sensor? Then failed to connect anything to your ECU? Yeah, no **** you're running rich. There's no way to enter closed loop without o2 sensor feedback. The ECU uses this feedback to trim fuel delivery. Did your CEL come on?
You need to sim NB to the ECU with your WB, or you need to replace the NB sensor and put the WB sensor in its own bung. I'd go with the latter, which will move the expensive WB sensor further from the extreme heat of the turbo.
If you are going to run the WB sensor only, you need to have your WB controller simulate NB. This is not the same thing as just grabbing one of the wires at the WB o2 harness.
You need to sim NB to the ECU with your WB, or you need to replace the NB sensor and put the WB sensor in its own bung. I'd go with the latter, which will move the expensive WB sensor further from the extreme heat of the turbo.
If you are going to run the WB sensor only, you need to have your WB controller simulate NB. This is not the same thing as just grabbing one of the wires at the WB o2 harness.
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03-17-2007, 08:35 PM
#31
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Alright I know that NB to the ECU wire has to go somewhere but that makes no sence to have to weld in an extra O2 bung!
Who else is running an AEM wideband???
Where does the NB sensor plug in to???
Who else is running an AEM wideband???
Where does the NB sensor plug in to???
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03-17-2007, 09:05 PM
#32
It makes perfect sense to weld in an extra bung for the wideband. The narrowband sensor should be near the stock location so that you can use the stock harness. It is not as easily affected by heat like the sensitive wideband sensor is. Your wideband sensor needs to be further downsteam if you want it to last long. That means 3' from the turbo as per the AEM instructions because the WB sensor will fail if it sees the high temperatures from the turbo. That is impossible to do without welding in an new O2 bung unless you have some magic power to just make it just appear all of a sudden.
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03-17-2007, 09:17 PM
#33
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AHHHHH alright. I didnt want to have to weld anything. I thought it was plug and play. 
https://www.miataturbo.net/forums/sh...ht=install+AEM
Anyways I just read this thread and things make since now. Thanks for all the help! Ill be running like a champ soon!
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