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Vafc "hack"

Discussion in 'Forced Induction' started by zexyEK, Feb 19, 2003.

  1. zexyEK

    zexyEK Junior Member

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    ok i understand how it works and everything i need to get for it to work, i want to know if anybody has done this or knows somebody who has done it if they hae had any problems with it and if u would recommend doin this "HACk"
     
  2. zexyEK

    zexyEK Junior Member

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    o yeah its a 99 civic ex with a t3
     
  3. pissedoffsol

    pissedoffsol RETIRED

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    its the very cheap way out. it doesn't work all that great.

    are you suing the dsm 450's?
     
  4. zexyEK

    zexyEK Junior Member

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  5. xj0hnx

    xj0hnx I wanna be sedated VIP

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    I'm dumb,what is a "vafc hack"?
     
  6. Domeskilla

    Domeskilla Senior Member

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    Its where you use the vfac to adjust your a/f while using a turbo. I THINK the order of shit goes

    vfac - not the grandest
    FMU - just a step up
    Hondata - fully controlable but is NOT a stand alone
    AEM EMS - full controllable stand alone

    i am sure there are more.. that is just the ones i know.
     
  7. xj0hnx

    xj0hnx I wanna be sedated VIP

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    That's it?It thought there was more to it than that,like I don't know,reprograming or something.Thanks.
     
  8. pills_PMD

    pills_PMD Super Moderator

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    hondata and dsm injectors dont' work well together... i would assume that dsm 450's and a vafc would be even harder to tune and keep stable.
     
  9. SolReaver

    SolReaver Senior Member

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    The vafc "hack" is not a hack at all. It is just cutting the fuel to ~40%, then using large injectors. The fuel trimming done by the afc allows you to idle large (450-550 cc) injectors on a stock ecu, with NO missing link or inline fuel pump.

    Basically, it cuts the stock fuel map back pretty far, then when you reach boost, the fuel map is extended and the proper air fuel ratio is achieved.

    The only downfall i have heard of regarding this set up is a minor jerking when you let off the throttle.

    FMU's get the job done, does not allow for any tuning, and are basically obsolete nowadays. Simple to install though :)

    Many guys from honda tech are making mad power on the afc hack. Cheap way out? Maybe :) But saying it doesnt work well is not true,

    Go here for more info regarding the hack

    And here to see a gsr on a drag 3 kit put down 268 whp

    In this thread a guy put down 280 whp, on this setup

    drag 3 mani
    turbonetics t3/t4 turbo 50 trim
    drag 3 dp 2.5"
    pwr intercooler
    .45 bar tial wg
    greddy type s bov
    dsm 450s + afc
    full 3" exhaust, no cat

    i wouldnt say the afc hack is junk just because there are better things out there, not everyone can afford 1000+ stand alone systems.
     
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