Tuning on S3, numbers off... Help?

Discussion in 'Mazdaspeed 3 Troubleshooting' started by mattyhawk, Sep 17, 2018.

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  1. mattyhawk

    mattyhawk Silver Member

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    Hey,

    So I installed a BNR S3 a month ago. I just fixed a bad Primary O2, and now I'm trying to get things back in order.

    See attached. This log has me stumped.

    I am pure load tuning. Targets starting at 3K are: 1.90 1.91 1.92 1.94 1.95 1.97 1.98 2.00 2.00

    What I am seeing is:

    1. AFRs doing good except above 5.5K RPM. After that, they aren't horrible, but need to be fixed. Target 11.8 @ 3K+.
    2. Load is close to target except above 6K, which is most likely due to MAF CAL.
    3. Boost is really low from my experience with the KO4. Not sure on the S3, but still looks really low to me based on Load target. Air temps are in the mid 60*F.
    4. WGDC is too high, >90%.
    5. Mass Airflow g/s are good, but maybe too good for what I'm targeting.
    6. VDyno sucks. See attached. 230tq/221hp peak :(

    I'm thinking it could be the MAF is bad. I cleaned it but no change.

    Any ideas? Thanks
     

    Attached Files:

  2. Sho

    Sho Platinum Member

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    What size intake? 4.4v at 14psi seems odd
     
    Sho, via a mobile device, Sep 18, 2018
    #2
  3. neganox

    neganox Feline Führer Moderator Platinum Member

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    Pre-load adjustment?
     
  4. mattyhawk

    mattyhawk Silver Member

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    Corksport stage 2. 3" HTP tip.

    Also, corksport 3.5 bar Map.
     
    mattyhawk, via a mobile device, Sep 18, 2018
    #4
  5. mattyhawk

    mattyhawk Silver Member

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    Maybe boost would be low, but would Load be that high?
     
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