Afr fluctation on closed loop Kpro4

K-Series Programmable ECU installation questions / support issues
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contectr
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Joined: Mon Feb 13, 2006 4:03 am

Afr fluctation on closed loop Kpro4

Post by contectr »

Hondata,
i have done a few test with a Ek swapped with a k20 engine and Hondata Kpro4 with a tech edge wideband wired in analog input 1.
I tune the calibration on open loop mode and it work very good, with afr flat in a wot 4th gear but when turn it on closed loop wideband, the ecu try to correct the afr with a lot of fluctation..
This like and PID control not properly setting...

i attach the log and the calibration
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Honda Ep3 stock k20a2 jrsc
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Hondata
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Re: Afr fluctation on closed loop Kpro4

Post by Hondata »

The wideband response is too slow and/or the voltage output is mismatched. Most people use AEM widebands; we find PLX work well.
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