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  1. Did just that, instructions unclear, engine...

    Did just that, instructions unclear, engine exploded. LOL..
  2. Can you verify that VVE is disabled currently on...

    Can you verify that VVE is disabled currently on this tune? I believe it is based on the High RPM enable/disabled values. I can go through the VE tuning steps again and try to get this looking...
  3. I'm glad we pointed this out. I attempted to do a...

    I'm glad we pointed this out. I attempted to do a bunch of VE tuning a while abo using Goat Rope's method, but apparently I suck at it. I always wondered if I am even using the VE tables because my...
  4. Thanks for the info. After changing the petal...

    Thanks for the info. After changing the petal position table, the issue is gone. While waiting for some responses on this, I sort of figured it out and decided <3500 RPM, 10 was "good enough", but...
  5. Regarding fuel pressure, I was watching it when...

    Regarding fuel pressure, I was watching it when it went into this mode and I was somewhere in the 50-something psi.

    Looking again at the PE settings, I guess I'm unclear as to what dials would...
  6. It's been a while since I put that data in, but I...

    It's been a while since I put that data in, but I believe that was the column I used, or should I say, would have used.
  7. Engine stumbles and knocks on acceleration

    This only happens on the first and sometimes second time after a startup when accelerating. The motor will stumble like it can't get fuel, then hit some pretty good KR, recover, then be OK after...
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    Update: turns out it was going into KR due to...

    Update: turns out it was going into KR due to going lean. It was not the tune, but fuel pressure. Turns out my Summit in-line filter screen had crap in it (new build, crap got in tank I'm sure)...
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    Fuel pressure does seem like the culprit here. I...

    Fuel pressure does seem like the culprit here. I wanted to reach out to folks who know better about tuning than I do to verify I'm not doing anything dumb with it before chasing down mechanical...
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    No adapter plates, I'm running stock LS3 heads....

    No adapter plates, I'm running stock LS3 heads. The injectors are Fuel Injector Clinic 850cc on a 535 lph in-tank pump.
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    Bad KR on WOT.. sometimes

    I'm seeing some gnarly KR at WOT no matter how much timing I pull back. It looks like I'm going lean, but this doesn't always happen. I noticed if I ease into it, I can keep the A/F proper and don't...
  12. Eek, sorry, wrong link. Thanks for the correction.

    Eek, sorry, wrong link. Thanks for the correction.
  13. Here's the source data:...

    Here's the source data: https://fuelinjectorclinic.com/GM-DATA/EFI-LIVE-0850
    The forum would not allow me to upload the entire workbook due to a data limit size.
  14. Copy that. What's the magic sauce equation for...

    Copy that. What's the magic sauce equation for determining what number should go in the Flow Rate vs. Press table? Right now it's 85 across the board, but I don't know how to figure out if it's right...
  15. Ok, I think I've figured out the issue. Yes, you...

    Ok, I think I've figured out the issue. Yes, you guys are right that it's just not getting the fuel it needs under boost. It turns out after a conversation with Carl over at Vaporworx, is that the...
  16. Ok, thanks. I'll log again in speed density to...

    Ok, thanks. I'll log again in speed density to capture this discrepancy in the EQ ratio error data for this range.
  17. Good information here. I currently have a...

    Good information here. I currently have a non-referenced regulator, but I have a VaporWorx controller that ramps fuel pressure 1:1 from 43 psi idle to 58 psi (100% duty cycle) using the MAP sensor as...
  18. Here's another log where it went wacky at...

    Here's another log where it went wacky at 8:11:17. I'd like to avoid trying to recreate this too many times so I don't smoke my rings (again).

    129473
  19. I have 5 flow rate tables for the injectors - not...

    I have 5 flow rate tables for the injectors - not sure what needs to be modified and how (like, how does it need to be modified to not be flat). I'm a little over my head here and I might just need a...
  20. Let me add that the MAF curve looks a bit weird...

    Let me add that the MAF curve looks a bit weird on top because I never get that far up it, so I never smoothed it out. I've done about 6 runs on speed density to dial in the VE table, but I'm...
  21. For the fuel system, I have a 535 LPH pump on...

    For the fuel system, I have a 535 LPH pump on 850cc FIC injectors. The table was originally copied from their website, but I'm not sure if the guy who tuned this the first time messed with this...
  22. Tip in throttle causes lean fuel spike and results in heavy knock

    I'm chasing an issue that I can't seem to resolve. I've been messing with the transient fuel table to mitigate most of the issue, but It's mostly guess work. I've seemed to resolve this issue the...
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