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Type: Posts; User: jonnycatz

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    Well, all seems ok for now. All day today, the...

    Well, all seems ok for now. All day today, the CEL light has vanished and the errors are gone. I made no change of any kind.
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    CEL just came up..

    I was driving yesterday and got my 1st CEL. I ran VCM scanner this evening and got the codes. [ECM] P0121 TP Sensor Circuit Insufficient Activity (Old) (History) (Immature) and [ECM] P0121 TP...
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    Make auto downshift into 1st..

    I have an 09' Vette A6. When taking off from any dead stop, the car always seems to take off in 2nd and will only drop into 1st if you floor the accelerator. This usually results in massive wheel...
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    I multiplied minimum idle airflow table by 0.80. ...

    I multiplied minimum idle airflow table by 0.80. It is acting much closer to stock now. I had to raise 1st gear shift mph points by a couple mph. It was shifting into 2nd very early with the...
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    My current tune

    My current tune
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    New port/polish Throttle Body idle issues.

    I have installed a port/polished TB on my 07' Avalanche 5.3L. It is the same size "87mm" as the stock model. Upon starting vehicle, the engline will initially idle a bit high by about 400-500 rpm...
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    WTB Calibrated Success

    Any1 have a used copy for sale?
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    I don't recall for sure.. but I'm pretty sure it...

    I don't recall for sure.. but I'm pretty sure it does.. I know for absolutely certain that the number i put in this chart was the number i seen during shifts while scanning under part throttle. Of...
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    The "Spark Minimum TqMgt" exactly addresses what...

    The "Spark Minimum TqMgt" exactly addresses what you are talking about for advance retard minimum during shifts. I set it at 10 across the table and felt it was a bit high "feel wise". I settled...
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    You have some big Dyn Air #'s on your pull scan. ...

    You have some big Dyn Air #'s on your pull scan. My 09 stock vette maxxes at 0.80. I guess the cam and headers are fully responsible for that. I noticed you raised spark advance in the WOT range...
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    Bump.

    Bump.
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    ETC Rate Limit??

    Can anyone comment on what ETC Rate Limit (It is under Torque Management Tab in Engine) is and how it works? What diiferences can be made with changing these values? I have disabled ETC limit and...
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    Gold mine... Thanks much Sick WS.. I do have a...

    Gold mine... Thanks much Sick WS.. I do have a question about "Stall Torque Mgmt" under torque management tab in trans section. I notice a lot of tuners will change the enable and disable values....
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    BUMP for this.. Same here.. Just want to know...

    BUMP for this.. Same here.. Just want to know which tables to modify TQ mgmt, shift times, and shift pressures. And which mode is Drive, Sport, and TUTD. There are so many modifiers, etc. I'm...
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    Thx for reply. So I will disable LTFT's and...

    Thx for reply. So I will disable LTFT's and flash before running scan. When I "reset trims" before running scan, does it reset the LTFT's also even though they are currently disabled in the tune? ...
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    MAF tuning via FT's

    I'm planning to set my tune to be MAF only. I have read some use STFT's only, others use LTFT's only, and then there are some who will scan LTFT + STFT simultaneously and and make correction to MAF...
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    I forgot to add that I noticed that the...

    I forgot to add that I noticed that the narrowbands are staying the same 880ish mv the entire time at wideband is showing this AFR rise. I have NPP exhaust and the wideband is a tailpipe sniffer. ...
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    Unusual AFR Jump in PE mode

    I ran a few 2nd gear WOT runs this evening. I am commanding 12.5 AFR for the entire rpm range in PE mode. In the 1st run, my wideband is showing about 11.8 ish AFR for the entire run instead of...
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    Thanks very much. That should get me safely...

    Thanks very much. That should get me safely started.
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    bump

    bump
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    Bump!

    Bump!
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    Vette 6-speed auto tranny questions

    I've been lightly playing with my Vette tune. Getting into trans settings and want to modify MPH shift speed points and shift pressures when I have the selector in sport mode, and also when using...
  23. Im near Asheville, NC

    Im near Asheville, NC
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    Yes, it reports my commanded AFR as accuarate.

    Yes, it reports my commanded AFR as accuarate.
  25. Thread: Ghost Cam??

    by jonnycatz
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    Ghost Cam??

    I've seen some tuning shops offer a tune mod to make your stock vehicle sound like it has a big cam in it, called "Ghost Cam". Is there a way to tune a Gen. 4 5.3L to get this choppy idle sound?
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