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ECMlink [Resolved] Running lean at idle

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98gstJames

Proven Member
221
42
May 25, 2022
WInchester, Virginia
So I just recently got ECMLink installed in my car and got it running as it should. On my log it is showing my AFR to be lean at idle, also I have an AEM wideband gauge and I spliced it into pin 76 for the front 02 sensor and when I select the front 02 sensor as my input pin for my narrowband simulation and save it the car then starts to sputter and run really rough but if I run it the factory settings for it then the car has no issues.

Anyone got any ideas?

I'll attach the log that I took after taking a quick drive around the shop and the log after I changed my 02 to the front 02 sensor.
 
First log is the driving log and second log is for when I selected the sensor for narrowband simulation.
 

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Alright so I’m thinking I’m gonna switch from pin 76 for the front 02 to pin 75 for the rear 02 sensor and then selecting for that as my rear 02 sensor for my narrowband simulation and seeing how that does.
 
I cant view the log at the moment but have you set the correct switchpoint in the narrowband sim tab?
Every time I set my narrowband simulation to on it just makes my car stumble and undriveable so I’ve just had it selected as undefined in the ecu input tab but when it is on it’s set to switch at 2.49v and my bottom options are set for a delay of 15secs and 0+ - and 0v and I now have it wired in at the rear 02 sensor at the ecu as well.
 
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