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Thread: Camaro ZL1 Smaller SC Pulley + Bigger Crankshaft Pulley

  1. #1
    Tuner in Training
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    Camaro ZL1 Smaller SC Pulley + Bigger Crankshaft Pulley

    Hi,

    I'm getting issues with a 2015 ZL1 from a customer which I tuned in Mexico (7800 feet over sea level) and now he took the car to Spain (sea level). Car was running perfect and making good power but now at WOT from 3,000 is making a hard hesitation, I don't think is a torque limit, could be spark plug gap (which I don't remember the value I set it), or anything else. Attached is log latest log file.

    If someone could take a look and help me, I would appreciate it!

    Thanks in advance.

    Camaro Test 3 Spain.hpl

  2. #2
    Probably should post the tune as well.

  3. #3
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    Attached, I did some other changes to limits but no luck.
    Attached Files Attached Files

  4. #4
    Unable to view that file, say its part of a remote network.

  5. #5
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    Mmm what about now?
    Attached Files Attached Files

  6. #6
    Yes that worked

    Have your tried swapping MAFs? Or cleaning the current one?
    Last edited by ZincGT; 02-14-2020 at 11:40 AM.

  7. #7
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    Quote Originally Posted by ZincGT View Post
    Yes that worked

    Have your tried swapping MAFs? Or cleaning the current one?
    Yes, I just told him to recalibrate spark plug gap (they were too big) and clean the MAF, tomorrow he will test it and send log. File is ok, right?

    Thanks.

  8. #8
    Ya, know issues seeing that

  9. #9
    Tuner in Training
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    Hi guys,
    No luck yet with this car, also I reduced a lot ignition table and there is not knock, boost almost keeps stable but RPM DROPS after 4,000RPM how is this possible? MAF is always 470+g/s until it drops. Is reaching MAF Limit?
    Thanks.
    Attached Files Attached Files

  10. #10
    Advanced Tuner
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    no that can't be the maf limit...my car (pullied 2014 ctsv) is running in the mid 600 g/sec close to 6k rpms so that isn't it

  11. #11
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    Looks like you have negative spark advance at WOT...

  12. #12
    Advanced Tuner jsllc's Avatar
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    So your log file lacks MANY pids needed to tell what is going on.

    There are two things that stick out.

    First is timing. -6 degrees is a killer

    The Second is MAP. On the first pull it hits 246 kpa, after that 135.

    The two together mean this car would make about 350hp.
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm

  13. #13
    Advanced Tuner jsllc's Avatar
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    Also you are missing all of these:

    ECM additional parms
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm

  14. #14
    Advanced Tuner jsllc's Avatar
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    Try this. FYI I believe this is the same car HERE

    I was DM'd about it.

    2015-ZL1-Patched-peV1-scV1-tqv1.hpt
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm