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 Post subject: 2002 EDM WRX STI A4RN100Q
PostPosted: Thu May 02, 2024 12:37 pm 
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Joined: Wed May 01, 2024 10:11 am
Posts: 1
Hello, I have some questions.
I want to log some parameters to understand why my afr is not good when idle (fail to the polution control lambda approximatively 1.05).
I have these parameters available
A/F Correction #1 (%) A/F Learning #1 (%) A/F Sensor #1 (Lambda) A/F Sensor #1 Current (mA) A/F Sensor #1 Heater Current (A) A/F Sensor #1 Resistance (ohm) Engine Load (Calculated) (g/rev) Engine Speed (rpm) Fuel Injector #1 Pulse Width (ms) Fuel Pump Duty (%) Ignition Total Timing (degrees) Manifold Relative Pressure (Corrected) (bar) Mass Airflow (g/s) Primary Wastegate Duty Cycle (%) Rear O2 Heater Voltage (V) Rear O2 Sensor (V) Throttle Opening Angle (%)

but not the misfire cyl 1-2-3 or 4, not the rear 02 sensor afr etc...

What can I do ? I remember that my ecu def was not find si I had to make a change in the file (romraider can now find my ecu A4RN100Q).

Thanks


Attachments:
romraiderlog_nasioc.csv [20.51 KiB]
Downloaded 34 times
romraiderLTV_20240502-121706.png
romraiderLTV_20240502-121706.png [ 24.42 KiB | Viewed 237 times ]
romraiderDTC_20240502-121540.png
romraiderDTC_20240502-121540.png [ 4.67 KiB | Viewed 237 times ]
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 Post subject: Re: 2002 EDM WRX STI A4RN100Q
PostPosted: Thu May 02, 2024 4:15 pm 
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Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
you need to fix the misfire first, if you have a cylinder not working with poor spark then that cylinder blows unburned fuel into the exhaust giving a fake lean lambda reading as you have.

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Good luck and may the logs be ever in your favour!


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