VERY High AFRs, but running very rich.

K-Series Programmable ECU installation questions / support issues
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saxon_schmauderer
Posts: 66
Joined: Tue Apr 26, 2022 3:18 am

VERY High AFRs, but running very rich.

Post by saxon_schmauderer »

    Help!
    So the Hondata ECU is thinking that the car is running VERY lean at idle / low boost numbers. Once I get on the throttle and build boost, the AFRs go to much more normal values.

    The car when getting these high AFRs (20+) is actually running very rich. I think the issue is that I had to put the wideband before the turbo wastegate so when at idle there is vacuum behind the wastegate dump and not enough air flow through
    20220604_222049.jpg
    I don't think I can move the wideband because then it would be AFTER the wastegate dump (and that could mess up the numbers too). Thoughts?
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    Spunkster
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    Posts: 23883
    Joined: Fri Sep 20, 2002 5:06 pm
    Location: Hondata

    Re: VERY High AFRs, but running very rich.

    Post by Spunkster »

    The sensor must be in a location that gets consistent and accurate readings.
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