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Thread: Hot re-starts sputter and cough....sometimes

  1. #1
    Advanced Tuner Niemer's Avatar
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    Hot re-starts sputter and cough....sometimes

    Every once in a while with a hot re-start the engine seems to struggle to start, it doesn't happen every time, but when it does it acts like a lawnmower that starts slow, gradually building rpm until it finally "catches". I'm assuming it has something to do with cranking spark, but not totally sure, has anyone else worked through this? Tune attached.
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    Ported TVS1900 OD cogs 10.5psi | ID850 | Vaporworx CTS-V 1:1 | COMP 219/233 .606"/.605" 113+1 | Ported TB | Pacesetter 1 3/4 LT | Solo Mach X3


  2. #2
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    Have you tried increasing Startup Airflow in the temp range you're having the problem? Idle-Airflow-Startup Airflow.

  3. #3
    Advanced Tuner Niemer's Avatar
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    I have not, I'll have to give that a go
    Ported TVS1900 OD cogs 10.5psi | ID850 | Vaporworx CTS-V 1:1 | COMP 219/233 .606"/.605" 113+1 | Ported TB | Pacesetter 1 3/4 LT | Solo Mach X3


  4. #4
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    I have that issue once in a while also, and made it much better adjusting startup airflow and cranking fuel in the temps where the issue is.
    2007 Corvette C6 Vert. A6
    LME LS402, Pat G custom cam, ATI 10% OD Damper
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    YSI, 3.0 pulley, ID 1000's
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    ARH 1 7/8 headers,
    1009 RWHP @ 7000, 817 RWT @ 6000

  5. #5
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    ^^^What they said
    Daily Driver= 2003 BMW 330xi
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