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Thread: BTR Stage 3 LS3 2015 Camaro NewB Help

  1. #1
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    BTR Stage 3 LS3 2015 Camaro Tune Need Help willing to hire a remote tuner

    I was able to get the car to idle and has a little bit of chop to it but it smells super rich like it is getting way to much fuel on idle. Car also has idle drop out when coasting to a stop, and stalls when cold. Engine also has a surge at cruising throttle and has a hesitation.
    Speed shop is supposed to get it on the Dyno and fine tune it but I want to get it running to get it there.
    I have read all of the tuning material I can get my hands on. Watched all the videos I could find and cant figure out what I am missing. New to tuning the gas motors through HP and am looking for a bit of help on where I need to go to get this tuned in. If someone can look at my files and tell me where I am going wrong.
    https://forum.hptuners.com/images/smilies/mad.png
    BTR Stage 3 Cam INT EXH
    Adv Duration 279 297
    Dur@.050 229 244 Lobe Sep: 113.0
    Valve Lift: .615 .596

    K&N Intake
    Stoke TB
    Stoke Intake
    Headers w/ No Cats
    2.5 Exh. H-pipe to NPP

    Any Advice or help would be appreciated. I attached the Tune File to where I have gotten and also a LOG file in the shop with idle and some revs to see if anyone can point me what needs to be changed.
    2015 Camaro SS Don 700 idle.2.hpt Current tune
    20-03-16 20-27-59.hpl Log File
    Last edited by decdj@yahoo.com; 03-20-2020 at 12:55 PM. Reason: Add to title

  2. #2
    Advanced Tuner
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    There are several things that you need to address.
    I'll give you a list of things that really need help in order to make it run correctly.


    1. The VVE table needs to be dialed in. This will help driveability considerably. It has a big affect on transient fueling.
    2. The base airflow table is stock. That needs to be bumped up substantially...at least 50-60% to start with.
    3. The base spark tables and the over/under spark tables need to be adjusted.
    4. The idle speed tables aren't very consistent.
    5. The misfire tables need to be desensitized.
    6. Adjust the startup airflow table.
    7. Lower the PE RPM threshold.

    There are a few other things that would help as well, but this is a good start.
    If you don't feel comfortable doing these, maybe the speed shop can help you with a base tune through email? If not, there are several of us on this site that do it for a living. I'm sure we can fix you right up with a good base tune.

  3. #3
    Advanced Tuner mbray01's Avatar
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    From the stock tune start here, it will get it running just enough to drive to the speed shop without much issue

    under airflow-dynamic set high rpm disable to 200, and re-enable to 100
    under idle, add 250 rpms to all idle tables
    under idle, base running airflow, double the table, under start up airflow, triple the table(this will overshoot idle airflows, but will keep things happy till airflow is correctly adjusted

    as far as smelling rich, that will all be addressed with a proper calibration, i wouldnt worry about much else, they should all be addressed with the dyno tune
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
    20yr Master Tech.
    Advanced Level Specialist
    Custom Car Fabrication, Customization, High Performance.
    GM World Class Technician
    Shop Owner

  4. #4
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    BTR Stage 3 LS3 2015 Camaro Tune Need Help dialing in

    Ok i made some of the adjustments and took it out for a ride and made 3 more logs. Under low rpm load I get a back fire. But the mid range feels super strong but may because i drive a slob of a silverado daily. Idle also seems a bit high now with spark and air adjusted. I attached a current tune and the logs.

    When I start hot it goes high idle what table adjusts that?
    Attached Files Attached Files

  5. #5
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    With logs I just posted do you think it is ok to drive until the rona lets us go back to normal?

  6. #6
    Senior Tuner SultanHassanMasTuning's Avatar
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    2015 Camaro SS fresh start.hpt

    flash and log this
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161

  7. #7
    Senior Tuner SultanHassanMasTuning's Avatar
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    2015 Camaro SS fresh start.hpt

    flash and log this
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161

  8. #8
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    Will do we had snow today so will be a few days until I can log anything they laid the salt down heavy today. What is changed in the file? Or is this a stock tune because it wont fire on a stock file.

  9. #9
    Senior Tuner SultanHassanMasTuning's Avatar
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    get just an idle log to see how things are going
    E-tuning/remote Tuning Sultan@mastuning.net Follow @MASTUNING Contact/Whatsapp +966555366161