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Thread: VVT custom cam tuning

  1. #1
    Senior Member
    Join Date
    Oct 2005
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    175

    Default VVT custom cam tuning

    We installed a custom cam in an otherwise stock L92.
    What do I need to do to get the cam dialed in? Do I need to adjust timing based
    on changes to cam phasing?
    So far there seems to be little information out there.
    Cam specs are: 218/226 .595” / .598” 114 LSA +5 advance
    Can someone guide me through this ?! I have never tuned an E38, only LS1B and Diesels
    2005 RCSB 2500HD GMC Sierra DURAMAX LLY
    1955 Chevy Truck 1st series, being restored
    2002 Mercedes C270 CDI

  2. #2
    Lifetime Member ChipsByAl's Avatar
    Join Date
    Feb 2006
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    617

    Default

    E38-idle-tuning is a good place to start. Did you install a Cam Phaser Limiter Kit?
    Al
    "Trash that carb and get Injected!"

  3. #3
    Senior Member
    Join Date
    Oct 2005
    Posts
    175

    Default

    I did install the COMP cam phaser kit.
    2005 RCSB 2500HD GMC Sierra DURAMAX LLY
    1955 Chevy Truck 1st series, being restored
    2002 Mercedes C270 CDI

  4. #4
    EFILive Reseller ringram's Avatar
    Join Date
    Oct 2005
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    1,411

    Default

    IIRC the guys from Comp said, lock the advance to a fixed value and tune it. Take a dyno readout.. rince and repeat. Then overlay your results and select the various advances that best suit your torque profile requirements.
    (ie) Max it out

    You probably dont want to do it in 1* increments!

    (ie) you tune it multiple times!
    Get EFILive in europe (http://www.efilive.eu).
    2007 Escalade ESV L92 6.2L VVT.
    2014 VF SV LS3 Maloo.

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