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Thread: Why do I have this fuel cut at 5300 rpm?

  1. #1
    Potential Tuner
    Join Date
    Mar 2010
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    9

    Why do I have this fuel cut at 5300 rpm?

    I'm a novice tuner, and have been working on my cammed ly6 swapped 69 Camaro. Working on the ve tables, and it seemed to be going well pulling up to 6500 rpm, making 380 hp at the wheels. Then seems like I've hit some kind of thresh hold where when it hits 5300 it kills the injector duty cycle. Can someone more experienced offer me some insight on what's going on?
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    Last edited by 11sChevelle; 08-17-2015 at 11:44 PM.

  2. #2
    Advanced Tuner
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    Dec 2012
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    Somewhere in Mexico
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    The attachments dont work. Post up your tune and a log. And could you be a little more specific? Does it still rev past 5300 with what feels like no power or is it dead at 5300?

  3. #3
    Potential Tuner
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    Mar 2010
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    9
    Lets try this again.

    No it won't rev past. You can see in the log it cuts fuel for part of a second, then puts fuel back in, and cuts it again.

    I'm sure I made more than 10 pulls clean to 6500 before this started happening.
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    Last edited by 11sChevelle; 08-17-2015 at 11:43 PM.

  4. #4
    Tuning Addict
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    Jan 2015
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    I can't look at your tune right now, but did you make it in 2.25? AND possibly update your tuner approximately 2 or 3 weeks ago? Only reason I ask is because I had an issue where I made a very nice VE table and suddenly had a "ghost" rev limiter at 2800 rpms. Only way I found it was to close and reopen the tune. VE looked like a city block with alleys in between skyscrapers. The coefficients also had really negative odd looking numbers in them. Thought it was something I did, so I made a new VE in another tune and same thing all over again. If this is your problem update and retry... Should be fixed now. Or at least I haven't had any more problems with the latest updates...
    2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
    2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80

    ~Greg Huggins~
    Remote Tuning Available at gh[email protected]
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  5. #5
    Potential Tuner
    Join Date
    Mar 2010
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    9
    Thank you. You gave me the right place to look. I'm using 2.24 and bluecat tool, but for some reason I had a giant hole in table in the 5600 cell. I have no idea how I could have missed this before as there was a giant spike sticking out of the 3d graph. I guess sometimes its the simplest explanation.

  6. #6
    Advanced Tuner
    Join Date
    Jan 2008
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    242
    Zero out Accel Thresh.

  7. #7
    Yes you did.
    1968 Bel Air Wagon
    L92/6L80E