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Thread: Twin Spark Maps?

  1. #1
    Junior Member
    Join Date
    May 2005
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    30

    Default Twin Spark Maps?

    I don't fully understand why twin spark maps are important/a benefit when in SD. Can anyone shed some light? How are these set up properly?
    1999 RCSB: P1SC, 57lb inj, E-fans/34\" rad, 3:73-Eaton 18\" Toyo\'s, Flashscan-FJO, Griffin IC, FLP level 5 and PI 10.5\" 3-disk....

  2. #2
    Lifetime Member
    Join Date
    Sep 2003
    Posts
    688

    Default

    Without the custom os when you unplug the maf the PCM uses the Low octane table for spark. Most of us SD guys running 1 bar have copied the hihg octane table to the low cotane table. This takes away our protection from Knock and bad gass. The twin spark maps allow you to maintain high and low octane functionality in the absence of the MAF sensor

  3. #3
    Junior Member
    Join Date
    May 2005
    Posts
    30

    Default

    That makes sense, when I used to tune with edit, I always just copied the high to the low and called it good. I guess it is probably smart to use both tables now!
    1999 RCSB: P1SC, 57lb inj, E-fans/34\" rad, 3:73-Eaton 18\" Toyo\'s, Flashscan-FJO, Griffin IC, FLP level 5 and PI 10.5\" 3-disk....

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