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Thread: Leaning out cold start in $0D MPFI?

  1. #1
    EFI GearHead ! EagleMark's Avatar
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    Feb 2011
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    Leaning out cold start in $0D MPFI?

    Going to be working on a well built $0D MPFI conversion this week. Did the tune last year and no issues, except cold start is still to rich. I've read about others with same issue after a MPFI $0D swap but never heard of the cure?

    I remember trying a few things back then but it was a one shot a day thing and guess I never got the cold start dialed in...

    Just looking for ideas before I get my hands on it again?

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  2. #2
    Fuel Injected! jim_in_dorris's Avatar
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    Dec 2011
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    Mark, try open Loop Idle AFR vs cool (L4ba3) and open loop afr vs vac(starts at 4bb4). They seem to be where the cold start afr values gets set
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