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Ecu Code 3 When In Boost

Discussion in 'Forced Induction' started by import_racer, Aug 14, 2003.

  1. import_racer

    import_racer Member

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    When I go into boost, sometimes I get a cel. It happens after 4000 rpms. It doesnt happen all the time. I checked the ecu and its a code 3 (map sensor). What do I do now? Also, it goes away when I turn off the car and restart it. Thanks.
     
  2. liquid00meth

    liquid00meth Senior Member

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    uhh, your map sesnor probably isn't bypassed. Do you have a map sensor bypass????
     
  3. import_racer

    import_racer Member

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    I need to bypass my map sensor? I have a revhard turbo kit, with missing link and fmu if this helps. Oh yeah, and I have a 7 psi wastegate.
     
  4. Accordturbo94

    Accordturbo94 Senior Member

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    The missing link is the best bleeder there is! As far as I know anyways! Thats a tough one!
     
  5. Accordturbo94

    Accordturbo94 Senior Member

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    This may sound stupid and may not even be possible... Ive never one so I dont know! Could you have mounted it back wards..... if you are unsure take it off an do the self blowing test with your mouth.. it should suck in but will by pass off when you blow
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    or, toss the fmu and missing link and do the vafc hack :)
     
  7. import_racer

    import_racer Member

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    the code only happens sometimes, sometimes, I can go into full boost in first, second, third and nothing happens. The other times, which is more than the other, I get a cel.
     
  8. Krazy4379

    Krazy4379 Member

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    I keep hearing about the hack, how is it done? :shrug:
     
  9. pissedoffsol

    pissedoffsol RETIRED

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  10. R6Elmo

    R6Elmo Junior Member

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    at first i would have said you went higher than what the map sensor could read. Just double check the missing link.

    VAFC isn't really a hack. You just put int he afc as described in the instructions. Then you purchase 440cc injectors and throw those in. Lean out the AFC by about 40% and you're set.
     
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