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Thread: 00 start up idle issues

  1. #1
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    00 start up idle issues

    5.3 stock internals has cold air,, 92mm throttle body, tbss intake and injectors speed eng headers and y pipe ,no 2nd stream o2s e fans has a no spring cam 0.500 0.500 224 230 lsa112 . having a idle issue but once running itll hold a idle just that int start can someone help me out??????????? . heres the latest log and tune
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    Last edited by yogimoto; 04-18-2021 at 09:40 PM.

  2. #2
    Tuning Addict 5FDP's Avatar
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    Fix your coolant temps sensor, that is part of your problem more than likely.
    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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    that just went out today ,it still runs the same as before

  4. #4
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    idk whats up with it but it runs no different ill get another log for you

  5. #5
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    heres the log before
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  6. #6
    Tuning Addict 5FDP's Avatar
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    Why is the idle timing so high?

    Shouldn't require 30+ degrees of timing to idle. Somewhere around 20ish is likely better.

    You didn't put the rest of the injector data in either, so that is all wrong. There is more to the data than than just the flow rate. You must put in the short pulse adder, min injector pulse and the offset vs volts data. If all that is wrong then it won't want to run correctly. You'll also need to redo the entire MAF and VE table once you fix that so fueling is correct. A wideband o2 sensor is needed for this.

    Your MAF and VE aren't really tuned at all. The MAF is still stock expect for 1 cell at 3,375hz
    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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    where do iget the injector data short pulse ect... for a tbss

  8. #8
    Tuning Addict 5FDP's Avatar
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    Find a stock TBSS tune from the tune repository on your customer page or on this forum somewhere.

    Then you need to convert the GEN 4 data into the GEN 3 format. You will to carefully read the tune you grab the data from and the excel spreadsheet so you are copying like data. Some of the data points may not line up exactly because of differences in operating systems and years of computer but you should still be able to make it work.
    Attached Files Attached Files
    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.