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Thread: 17 1le cammed with nw103 tb issue with erratic throttle

  1. #1
    Tuner in Training
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    Mar 2017
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    17 1le cammed with nw103 tb issue with erratic throttle

    Hey all, finished this cam install and engine is running good other than these issues:

    *Throttle is erratic and running off at 32% throttle and speed over 30. I have been modifying the Driver demand, as well as the ETC to try to tame the response with no real change.

    * off throttle idle is rich..(I have adjusted the zero pedal torque and the Virtual torque while getting the idle correct, as well after VVE and VT i have adjusted the MAF to try to bring it closer.

    what else may be required upon use of a NW103 for these LT1's?

    I have dealt with these on the LS's for years with mixed enjoyment.

    appreciate any help!

    EME
    Attached Files Attached Files
    Last edited by EME; 11-14-2022 at 10:07 AM.

  2. #2
    Senior Tuner
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    May 2003
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    If your airmass and Virtual Torque are too far off, it can send you in circles trying to correct the behavior. Go back to stock, give it more room to adjust itself with the idle tables, then fix the Airmass (MAF/VVE), THEN make Virtual Torque changes.

    Cant see your attachment. Not sure what happened there.
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    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  3. #3
    Tuner in Training
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    Updated with tune and datalog

  4. #4
    Senior Tuner
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    One thing I notice is you're making Virtual Torque changes but you're not making them to the (E85)Flex Fuel tables, which are still stock. When you have flex fuel sensor enabled, I'm pretty sure it uses the E85 VT tables. You could try copying your VT changes to the E85 tables, but a quick glance at them doesn't make me think they would be good to use and might cause more issues.
    [email protected]
    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3