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Thread: COS 1 won't run duel spark map?

  1. #1
    Senior Member
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    Default COS 1 won't run duel spark map?

    I've upgraded a VT to COS 1 for SD and am using 92115988 calibration from a12225074 O.S. and it will only use the low octane spark table. It's not a huge issue but it would be nice to know if anyone else has had this issue. It's not logging any KR, burst knock is zero's.

    Cheers

    Joel

  2. #2
    Lifetime Member macca_779's Avatar
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    Default

    did u full flash the tune in after upgrading to OS1?

  3. #3
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    Yep twice, as I though maybe the first time had an issue. When you look up the O.S. it comes up.

  4. #4
    Lifetime Member macca_779's Avatar
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    Well I got nothing except perhaps trying an alternate GM calibration and then upgrading that. Have you considered just using OS3 or OS5. They have alot more features than OS1.

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