A/f sensor 1 ratio number Accessport
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This is a discussion on A/f sensor 1 ratio number Accessport within the Tuning: Electronic Engine Management forums, part of the Tech & Modifying & General Repairs category; Recently installed Cobb ap v3 stage 1 Aem Acn91 map on 14 wrx 265hp motor. Driving to work, I got ...

  1. #1
    Registered User 100plus2Vegas's Avatar
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    A/f sensor 1 ratio number Accessport

    Recently installed Cobb ap v3 stage 1 Aem Acn91 map on 14 wrx 265hp motor. Driving to work, I got the following numbers.

    A/f sensor 1 ratio: 11.14/20.33. The high number is achieved on. De acceleration with no throttle. This seems lean to me.

    Boost: 17.28 max.

    Feedback knock: -4.20/0

    Inj duty cycle: o/83.89

    This is at sea level in Ca, about 60 degrees ambient temp. I only have 650 miles on it so I am shifting at 4k rpm till I hit 1000 miles and change oil.

    Any comments on the numbers? I am going to add Dam to the monitoring parameters and report back.
    14 sedan Limited: AEM intake, Tomioka IC hose, Cobb AP V3, Invidia down pipe with 3" cat, custom 3" mandrel bent single exhaust, Aem air fuel gauge,Cobb knob,Perrin Pitch Stop mount, SPT front strut tower brace, K-Sport coilovers@1.5" drop.

    07 Duramax LBZ- 26psi,intake, TBE, Diablosport programmer, Edge Insight with EGT, EGR block off, BD exhaust manifold, PPE fuel valve.

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  3. #2
    Moderator Donkey's Avatar
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    On decel the ECU shuts the injectors off. Post a datalog instead if just max/min numbers.


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