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  1. #1
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    13:1 AFR 'free' flash tune

    Interesting. Who could this possible be...

    Click here to enlarge

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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    huh? Is this a log from someone's car?

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    That appears to be a dynapack dyno, Bren tuning?
    2011 E90 M3 \ Melbourne Rot Metallic

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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    That appears to be a dynapack dyno, Bren tuning?
    Yep, he posted it on Facebook. IDK who's tuning it was, though.
    Click here to enlarge
    MOTIV750, MOTIV P-1000 PI, MOTIV/FUEL-IT! low pressure fuel system, AEM EMS/COBB AP, Aquamist HFS-3, ETS FMIC, SPEC stage 3+ clutch/SS flywheel, BC Racing coilovers and VMR wheels wrapped in Hankook RS3s.

  5. #5
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    Click here to enlarge Originally Posted by rader1 Click here to enlarge
    Yep, he posted it on Facebook. IDK who's tuning it was, though.
    I think we do.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    That appears to be a dynapack dyno, Bren tuning?
    Yep.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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  7. #7
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I think we do.
    ...and?
    Click here to enlarge
    MOTIV750, MOTIV P-1000 PI, MOTIV/FUEL-IT! low pressure fuel system, AEM EMS/COBB AP, Aquamist HFS-3, ETS FMIC, SPEC stage 3+ clutch/SS flywheel, BC Racing coilovers and VMR wheels wrapped in Hankook RS3s.

  8. #8
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    Click here to enlarge Originally Posted by rader1 Click here to enlarge
    ...and?
    And nothing. Just a graph to look at as a reminder for people to not just flash anything to their cars.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
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    I dont get it... looks like a stock power curve

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    This thread does not deliver.

  11. #11
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    Click here to enlarge Originally Posted by E90Company Click here to enlarge
    This thread does not deliver.
    Agree...
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    997.1 tt
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  12. #12
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    I'm lost. Why did someone tune it to 13:1? Straight E85?
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  13. #13
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    I'm lost. Why did someone tune it to 13:1? Straight E85?
    don't you run E85 a bunch richer?

    like 9:1?

    isn't 13:1 super freakin lean for E85?
    boop

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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
    don't you run E85 a bunch richer?

    like 9:1?

    isn't 13:1 super freakin lean for E85?
    No. Is all lambda. Since our O2s only read lambda, the DME back calculates AFR based on gas, so it'll show 13.1:1 even though it may be 9:1 (made up example) depending on fuel used.

    FWIW, I'm running 13:1 with E70 as are some others.
    Change is constant

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    IBTL? Oh wait.
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  16. #16
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    Click here to enlarge Originally Posted by The Ghost Click here to enlarge
    No. Is all lambda. Since our O2s only read lambda, the DME back calculates AFR based on gas, so it'll show 13.1:1 even though it may be 9:1 (made up example) depending on fuel used.

    FWIW, I'm running 13:1 with E70 as are some others.
    ahhh ok fair enough

    why would it show 13:1 though?

    i get that lambda = deviation from stoich... so it just sees 13:1 as being closer to stoich as if it were using gas?
    boop

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    whatever the reason, it looks smooth and deliberate..
    just consider the situation before making assumptions

  18. #18
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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
    ahhh ok fair enough

    why would it show 13:1 though?

    i get that lambda = deviation from stoich... so it just sees 13:1 as being closer to stoich as if it were using gas?
    Right. It back calculated AFR from lambda using a static factor for gasoline.
    Change is constant

  19. #19
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    Fuel economy extreme map? Catless e85 emissions map? Whoops I accidentally typed 13 when I meant 12? Bad scaling?

  20. #20
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    2011 E90 M3 \ Melbourne Rot Metallic

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  21. #21
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    And nothing. Just a graph to look at as a reminder for people to not just flash anything to their cars.
    Pretty sure this was a Subaru PROtune...... Was neither confirmed (nor denied) this is an N54 dyno/$#@! tune
    COBB AP ProTune by Bren of ///Bren Tuning
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    Anyone ever gonna say what this graph is from/for?

  23. #23
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    Pretty sure this was a Subaru PROtune...... Was neither confirmed (nor denied) this is an N54 dyno/$#@! tune
    File said '08 so I assumed N54? Oh well maybe then this is a big waste of time and I suck at life.

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  24. #24
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    File said '08 so I assumed N54? Oh well maybe then this is a big waste of time and I suck at life.
    Except it says "08 Spec B" in the File Folder line on the bottom of the graph....
    COBB AP ProTune by Bren of ///Bren Tuning
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  25. #25
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    Click here to enlarge
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

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