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Thread: cam tuning question

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  1. #1
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    Default cam tuning question

    Ok so i just got my TSP 220/220 .581/.581 112 LSA cam in my truck and i had my tune updated by my tuner and im doing some fine tunning myselft.

    my question is, if i put in gear and let off the brake it will slowly accelerate till ~1200 rpm and 20mph. What is causing this? my idle is set to 650rpm.

    Also if im cruising along at like 30mph and i let off the gas, its like on cruise and it will stay at a constant speed for awhile before it starts deceleration very slowly.

    I have searched and i think it may be the desired airflow is too high, but im not 100% sure.

    Thanks

  2. #2
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    If Idle airflow is to high you will get this,and also look at your throttle cracker!!

  3. #3
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    Throttle cracker is most likely the culprit but ve can effect this also. But it would have to be wayyyy off.
    cosmos purple 2004 gto
    408 E85 GT47-91 ,turbo 400,9" currie straight axle,28/10.5w mt et streets



    2005 yellowjacket gto
    417 rwhp and 397 torque
    582 rwhp and 676 torque (150 shot)

  4. #4
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    its probly the throttle cracker, ill have to check that out.

    should i just decrease the table by a few percent?

  5. #5
    Lifetime Member 5.7ute's Avatar
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    Desired airflow in gear sounds like it is too high from the symptom you first describe as well as TC.
    The Tremor at AIR

  6. #6
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    Yes start with that. Desired airflow may also be too high as ute said. I forget about that table sometimes.

    Just bring it down by a small %. Or attach your file and someone can take a look to see where it's at and possibly help you out.
    cosmos purple 2004 gto
    408 E85 GT47-91 ,turbo 400,9" currie straight axle,28/10.5w mt et streets



    2005 yellowjacket gto
    417 rwhp and 397 torque
    582 rwhp and 676 torque (150 shot)

  7. #7
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    i decreased the desired airflow a tad bit. it seemed to help a faint bit.

    here is my tune file.
    Attached Files Attached Files

  8. #8
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    your throttle cracker air flow is very high. Might want to find the oem values and try them.

  9. #9
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    i have my previous tune before the cracker was adjusted....ill try putting those values in place of my current ones and see if that helps.

    thanks

  10. #10
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    well i looked at my tune before cam and after and the throttle cracker values are the same.

    the throttle follower has been changed though.

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