AFPR and your O2 sensor
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Car: 88' formula
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AFPR and your O2 sensor
I was reading in one of my books today called "how to modify and tune fuel injection" at work with all my free time. I have read up on some useful facts for all you guys using Adjustable Fuel Pressure Regulators.
TThe book states that "while at the track or if your about to race that you should unplug your O2(oxygen) sensor. When the ECM enters the closed-loop mode the oxygen sensor will report enrichment of the fuel to the ECM. The injector pulse width would then be shortened, leaning the air/fuel mixture, and defeating the benifits of the fuel pressure regulator. Disconnecting the O2 sensor would either keep the ECM from entering closed-loop or deliver a nuetral air/fuel ratio signal to the ECM if it does.\
Just a little helpful advice. Tell me what you think.
TThe book states that "while at the track or if your about to race that you should unplug your O2(oxygen) sensor. When the ECM enters the closed-loop mode the oxygen sensor will report enrichment of the fuel to the ECM. The injector pulse width would then be shortened, leaning the air/fuel mixture, and defeating the benifits of the fuel pressure regulator. Disconnecting the O2 sensor would either keep the ECM from entering closed-loop or deliver a nuetral air/fuel ratio signal to the ECM if it does.\
Just a little helpful advice. Tell me what you think.
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Blue86IrocZ28 (05-13-2022)
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Car: 1988 Camaro IROC-Z
Engine: 350 TPI (L98)
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I didn't think that the ECM uses the O2 sensor in closed loop mode.
The only way that I could see that this would make a difference is that the computer locks the BLMs at 128, but that you actually have more/less fuel adjusted with the AFPR.
I'm not sure, but wouldn't that mean that your AFPR wouldn't be setup properly for no/unplugged O2? Or vice-versa if you setup up with it unplugged?
The only way that I could see that this would make a difference is that the computer locks the BLMs at 128, but that you actually have more/less fuel adjusted with the AFPR.
I'm not sure, but wouldn't that mean that your AFPR wouldn't be setup properly for no/unplugged O2? Or vice-versa if you setup up with it unplugged?
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Originally posted by Maroon-IROC-Z
I didn't think that the ECM uses the O2 sensor in closed loop mode.
I didn't think that the ECM uses the O2 sensor in closed loop mode.
If you really want a lesson on all this kinda stuff, read this stickies in the PROM forum.
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Re: AFPR and your O2 sensor
Originally posted by AMRformula305
I was reading in one of my books today called "how to modify and tune fuel injection" at work with all my free time. I have read up on some useful facts for all you guys using Adjustable Fuel Pressure Regulators.
TThe book states that "while at the track or if your about to race that you should unplug your O2(oxygen) sensor. When the ECM enters the closed-loop mode the oxygen sensor will report enrichment of the fuel to the ECM. The injector pulse width would then be shortened, leaning the air/fuel mixture, and defeating the benifits of the fuel pressure regulator. Disconnecting the O2 sensor would either keep the ECM from entering closed-loop or deliver a nuetral air/fuel ratio signal to the ECM if it does.\
Just a little helpful advice. Tell me what you think.
I was reading in one of my books today called "how to modify and tune fuel injection" at work with all my free time. I have read up on some useful facts for all you guys using Adjustable Fuel Pressure Regulators.
TThe book states that "while at the track or if your about to race that you should unplug your O2(oxygen) sensor. When the ECM enters the closed-loop mode the oxygen sensor will report enrichment of the fuel to the ECM. The injector pulse width would then be shortened, leaning the air/fuel mixture, and defeating the benifits of the fuel pressure regulator. Disconnecting the O2 sensor would either keep the ECM from entering closed-loop or deliver a nuetral air/fuel ratio signal to the ECM if it does.\
Just a little helpful advice. Tell me what you think.
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