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Thread: 2014 Camaro 2SS STOCK datalog- Oddities

  1. #1
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    2014 Camaro 2SS STOCK datalog- Oddities

    The car was purchased used last July. Out of pure boredom, I went for a drive and was logging the car. The car is completely stock with no mods. The car appears to be running a tad high on the LTFT and I'm also getting some knock retard above 4k rpm. Is this normal for a stock car? I suspect I may have an issue i need to diagnose, but not sure what. The car is not showing any warning lights or fault codes, driveability is fine and all the readiness checks have passed. I had no reason to think there was anything wrong with the car. Im only curious about whats showing up in the datalog. I do have a wideband for it, I have yet to install it though. Didn't think i would need it for a completely stock car. I plan on doing a cam and exhaust eventually, but i want to make sure I get any issues ironed out beforehand so I'm not chasing my tail later on attempting to tune it. Site wont let me upload the log file, I assume its too big (little over 10Mb), so here's a few screen shots. Your thoughts would be greatly appreciated! Thanks guys!

    Attachment 98178Attachment 98179Attachment 98180Attachment 98181Attachment 98182
    Last edited by danmw2003; 04-08-2020 at 07:18 PM.

  2. #2
    Tuning Addict 5FDP's Avatar
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    Clean the MAF and reset the trims, see if they get better.

    Knock on a stock calibration is pretty much the norm, it's basically built into the calibration to have knock.

    What fuel do you run in the tank??
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    Mobil 93 Octane ever since I've had the car. The MAF was recently cleaned with MAF cleaner, because i suspected it might possibly need to be cleaned from a previous log i had run last month. I suspect it helped because my LTFT were 10-12% previously when i logged last month, before I cleaned the MAF. I did not reset my trims though, I will have to try that and see.

  4. #4
    Senior Tuner mbray01's Avatar
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    10% trims on a stock call is about the norm. I usually see 5-7 lt, and another 5-7 st. knock up top is pretty normal, on stock call, there is so much that is not ideal, that leads the perceived knock. once its properly tuned, that all starts to go away
    Michael Bray
    Rusty Knuckle Garage
    Slidell, Louisiana
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  5. #5
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    Thanks for the responses guys. So in retrospect, this is normal for stock calibrations, not some problem i need to be chasing down correct?

  6. #6
    Tuning Addict 5FDP's Avatar
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    I would say it's fine. Anything around that 5-8% is what I tend to see a lot.

    Getting the knock under control should be somewhat straight forward on a stock vehicle. Different power enrichment settings, reducing burst knock and touching up the timing to remove some of the knock.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  7. #7
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    Exactly what I needed to hear. I will dial it in some once i get the wideband installed. Thanks guys!