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Type: Posts; User: hawk02

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  1. AFR accuracy from a tail pipe sensor in a dual mode (NPP) exhaust

    Someone over at C5 posted dyno results of his bone stock ZL1. He asked about his car running lean since the dyno measured an AFR from 12.5 to almost 13. A well known tuner responded that the dyno...
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    No. The car had a 10% overdrive pulley and ID...

    No. The car had a 10% overdrive pulley and ID 850 injectors at the time and obviously a different tune. Since then it has been returned back to the stock damper and stock injectors. Only mod now...
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    Enrichment Ramp In causing slight hesitation.

    I've got a 2013 Camaro ZL1 convertible. Only mod is a Roto-Fab Cold air intake. Other than some torque management removal and fan adjustment, the tune is all stock.

    I had the car dyno'd today...
  4. Thread: CTS-V tune help

    by hawk02
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    You're popping on gear changes because clutch...

    You're popping on gear changes because clutch fuel cutoff (CFCO) is enabled same as in the stock tune. It has nothing to do with the DFCO changes.
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    I just disabled it and didn't notice any...

    I just disabled it and didn't notice any difference except the lack of popping and burping when I shift. Car didn't appear to up rev with it disabled. Think I'll keep it disabled for now.
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    Ok. That's good to know. Sounds like I...

    Ok. That's good to know.

    Sounds like I should leave it enabled and learn to live with the popping and burbling.
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    Clutch Fuel Cutoff (CFCO) Question

    I'm not a big fan of the popping and burping from the CFCO when I shift gears on my ZL1. I don't mind it on deceleration just not when I shift gears.

    What are the drawbacks other than no longer...
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    If it's any consolation, I'm having a similar...

    If it's any consolation, I'm having a similar issue with my ZL1.

    Knock is occurring at low speed and rpm usually in 1st and 2nd gear. Pulling lots of timing in the 1600-2800 rpm range hasn't...
  9. What was the fix? i noticed the STFTs on my ZL1...

    What was the fix? i noticed the STFTs on my ZL1 (manual tranny) will periodically go +29.
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    Seeing some knock retard at low engine loads. ...

    Seeing some knock retard at low engine loads. Almost exclusively in 1st gear. Quite a bit of timing has been pulled out of the area where it occurs but the knock is still there. It's typically 1-2...
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    ID 850s Injection Timing Question

    I have ID 850 injectors installed in my ZL1.

    I was poking around their configuration and noticed under injection timing that values have been entered in the Normal EOI Target vs RPM table.
    ...
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