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Thread: Cold start, IAT, ECT question.

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    Default Cold start, IAT, ECT question.

    Hopefully a simple question.

    In the colder days of winter, I logged my cold start AFR's and corrected the ECT multiplier table A0008, COS5.

    I had all the ECT temps from around 15F and up holding at 13.75 AFR.

    Now when I go and start the car with 50F plus ambient temps, its holding around 12.5 AFR. Richer than I want.

    I am running closed loop/MAF/VE so once it goes into closed loop the trims handle the rest. I am looking for a way to get repeatable cold start AFR in all weather conditions.

    Thanks in advance.

    Brad
    Last edited by bmax; March 7th, 2011 at 04:37 AM. Reason: text format
    99 Firebird Formula, M6, LS6 intake, headers, catback, lid, BRE cam.

    EFI V2, V7.5.5 (Build 149)
    V8.1.2 (Build 142)
    Boot Block 2.07.01 Oct 14, 2010
    Firmware 2.07.05 Jan 29, 2011
    LC-1 with serial cable
    COS 5

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