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  1. #1
    Sr. Mechanic
    Join Date
    Jun 2011
    Location
    Tuscaloosa, AL
    Posts
    157

    Default BlackBear Data log

    Okay some of you guys that have blackbear maybe able to answer this, after logging I noticed my max torque was only 324Lbs. These trucks are rated for 360 and then with my mods I was thinking maybe 370. Why did I get such a low number?
    2004 GMC Sierra SLT 6.0L 4x4
    UWS Low Profile toolbox 10% tint front and over stock back tint
    AirAid MIT and K&N airfilter
    BlackBear Performance

  2. #2

    Default

    What's the RPO code for your engine?

  3. #3
    Sr. Mechanic
    Join Date
    Jun 2011
    Location
    Tuscaloosa, AL
    Posts
    157

    Default

    The RPO code is LQ4

  4. #4

    Default

    Stock rating on the LQ4 seems to be 360-370 lb-ft at the flywheel. Note that the data logging is more than likely calculating power based on vehicle speed vs. engine speed, which would mean you'd be getting an approximate number for power at the wheels. Given a 15-20% loss through the drivetrain after the flywheel, I'd say the number line up ok, and you're probably making ~380 lb-ft at the flywheel.

  5. #5
    Sr. Mechanic
    Join Date
    Jun 2011
    Location
    Tuscaloosa, AL
    Posts
    157

    Default

    Oh okay I know what you're saying. I was curious too because my friend has the same truck except 2 years older and he only put out 310. Well thanks for the info I can't wait for the tune to get here!

  6. #6
    Sr. Mechanic
    Join Date
    Jun 2011
    Location
    Tuscaloosa, AL
    Posts
    157

    Default

    hey guys I have the new pcm in and damn I can definitely feel the difference. Does anyone now how accurate the readings on HP and Torque are when logging data? Cause if it is then I am putting out some pretty good numbers

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