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

  1. #1
    EFI GearHead ! EagleMark's Avatar
    Join Date
    Feb 2011
    North Idaho

    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
    Join Date
    Dec 2011
    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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