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Thread: Random Kr would like suggestions

  1. #1
    Tuner in Training
    Join Date
    Jun 2018
    Posts
    20

    Random Kr would like suggestions

    Out of the blue I started getting random kr during hwy driving and now at wot, not sure what to do. My tuner has pulled 4 deg vs where it was happy less than a month ago. I have a rotofab dry filter, ported tb and intake and have installed a wb. I have checked around for rattles from above. Its hard to listen for any ticks with the injectors and pump clacking away. This weekend Ill try to pull it on ramps and look under it. Seems to not have it or as much when the engine is cold and seems to increase as the engine warms up. Looking for suggestions and ideas please
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  2. #2
    Camaro SS I assume?

    Quick look shows me too much spark for 93octane and way lean on fueling at .90-.95ish lambda. Tune needs work. MAF transfer needs work too.

  3. #3
    Tuner Camaro6's Avatar
    Join Date
    Jun 2018
    Location
    Chicagoland
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    125
    If you look at the log, your engine tq source changes to trans from axle during 3100-4100 and torque mgt kicks in pulling 18 degrees of timing at it's highest point. I also agree it is running pretty lean. 5,400rpm and up virtual tq is showing off a little bit and the MAF needs better tuning. Tune needs some dialing in, that's all.

    Tune isn't attached, so it's hard to say if you have the max, peak, brake, etq TQ tables correct also.
    2018 Camaro SS, LT4 Fuel System, LT4 S/C
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    1999 Pontiac Firehawk
    1987 Chevy Caprice, 6.0L TT 4L80 AWD
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  4. #4
    Tuner in Training
    Join Date
    Jun 2018
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    Yes you are correct its a 16 Camaro ss (totally spaced that sorry). I will include my tune file when I get to my PC.

    Learning this stuff for the first time is a little overwhelming on a gen v. I might have to try and tune my commuter car (2.2 ecotec) so I can learn the basics better.

  5. #5
    Tuner in Training
    Join Date
    Jun 2018
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    20
    here is the tune file.
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  6. #6
    Senior Tuner Ben Charles's Avatar
    Join Date
    Aug 2009
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    Calibrating
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    3,371
    I do a bunch of these if you ever need some help