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  1. #1

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    Chart of Perfect AFRs? ET137+4mm Maxed out at 8500-8600RPMs.

    What do you think of these AFRs? ET137+4mm, F1000, 60lb injectors with a Dynojet power commander V. After 1 hour of auto tuning.
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  2. #2
    boost junkie skidoochris's Avatar
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    around 7000 is the peak knock zone
    and your in the 13s on pump your pushing your luck

  3. #3

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    Quote Originally Posted by skidoochris View Post
    around 7000 is the peak knock zone
    and your in the 13s on pump your pushing your luck
    Richen up the 7k into the 12.7s?

  4. #4
    boost junkie skidoochris's Avatar
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    depends on timing and octane
    running richer usually hurts nothing
    not the case running lean

  5. #5

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    Quote Originally Posted by skidoochris View Post
    depends on timing and octane
    running richer usually hurts nothing
    not the case running lean
    I can't tell what the ignition timing is. Its a siemens ECU, the maptunerX logging and Monitoring doesn't show any values for ignition timing. Is there a device that can be installed to view timing? Does anyone know what the stock 215hp engine ignition timing levels are, approx.? Thanks
    Last edited by tiderider; 07-21-2019 at 10:59 PM.

  6. #6
    ptscon's Avatar
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    A common target is 13 when positive boost kicks in just after 6k RPM and then slowly taper down to max RPM.

  7. #7

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    Quote Originally Posted by ptscon View Post
    A common target is 13 when positive boost kicks in just after 6k RPM and then slowly taper down to max RPM.
    Thank you. Would the ET137+4mm run better with 60 or 80lbs injectors spun up to 8650 Rpm?

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