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vdubnation
Turboman
Global Moderator
Sr. Member
Karma: +49/-2
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Posts: 433
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« Reply #1 on: March 17, 2013, 04:06:52 PM »
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had the same issue with my frankenturbos the wastegate cracking is set to high just checked mine this weekend they were cracking open at around 16psi might be the same just a suggestion
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« Last Edit: March 17, 2013, 04:08:55 PM by vdubnation »
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ddillenger
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« Reply #2 on: March 17, 2013, 04:07:31 PM »
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Lower requested boost. Too close to the map limit.
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« Last Edit: March 17, 2013, 04:11:01 PM by ddillenger »
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nyet
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« Reply #3 on: March 17, 2013, 04:10:37 PM »
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Pretty obvious really; if you req max boost, I-limit can only adapt up, never down.
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savages4
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« Reply #4 on: March 17, 2013, 04:14:33 PM »
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So how can I get 22 psi if I'm lowering the load? I'm request 228 load at peak.. Also, Looking at my desired vs actual o2 sensor voltage it appears I'm running quite lean.
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ddillenger
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« Reply #5 on: March 17, 2013, 04:16:12 PM »
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why do you need 22psi? What's wrong with 21?  Also, consider reworking LDRXN. Ramping up too fast for my taste. Lastly, I've never been able to run those levels of boost with that amount of timing. What do your cf's look like? Are you running some sort of super fuel? I run 94 and can't maintain that. I'm just going to leave this here.  Look familiar? Requesting too much boost. Backed it down a bit, pulled some timing (and mine was less aggressive than yours) and it runs 100% better. |
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« Last Edit: March 17, 2013, 04:23:03 PM by ddillenger »
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nyet
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« Reply #6 on: March 17, 2013, 04:21:02 PM »
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So how can I get 22 psi if I'm lowering the load? I'm request 228 load at peak.. Also, Looking at my desired vs actual o2 sensor voltage it appears I'm running quite lean.
You'll never get the PID stable at 22psi w/o the 5120 hack. You'll have to run locked wastegate DC, which means your actual boost will vary with conditions. |
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savages4
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« Reply #7 on: March 17, 2013, 04:27:45 PM »
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 I'm running 91 octane.. Did you look at my o2 sensor voltage vs requested AFR why is it so lean? |
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ddillenger
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« Reply #8 on: March 17, 2013, 04:32:47 PM »
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Few things don't make sense to me. You running 550s? KRKTE doesn't look right for 4 bar. How did you calculate injector size? KVB is showing 575, how did you come up with that number? 550s at 4 bar should flow 633ish cc's.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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nyet
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« Reply #9 on: March 17, 2013, 04:36:47 PM »
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I'm running 91 octane.. Did you look at my o2 sensor voltage vs requested AFR why is it so lean?
Get a wideband, stat. O2 voltages don't mean squat. |
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nyet
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« Reply #10 on: March 17, 2013, 04:37:40 PM »
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Lastly, I've never been able to run those levels of boost with that amount of timing.
I don't see timing or fuel injector on time in the log  |
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savages4
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« Reply #11 on: March 17, 2013, 04:40:41 PM »
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Yeah I need to add the missing variables I forgot to log. But with -8 correction factors obviously i'm running too much timing. I came up with the fueling with Berttos who's running the same setup (4 bar fpr/ev14 injectors) ignore the KVB I haven't even calculated that yet.
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« Last Edit: March 17, 2013, 04:42:52 PM by savages4 »
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ddillenger
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« Reply #12 on: March 17, 2013, 04:43:09 PM »
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I don't see timing or fuel injector on time in the log I'm looking at his bin. TOO much IMHO. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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ddillenger
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« Reply #13 on: March 17, 2013, 04:54:55 PM »
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Yeah I need to add the missing variables I forgot to log. But with -8 correction factors obviously i'm running too much timing. I came up with the fueling with Berttos who's running the same setup (4 bar fpr/ev14 injectors) ignore the KVB I haven't even calculated that yet.
This works well for me. 4 bar, 550cc EV14's. Fuel trims are within 2 percent. (Mine are the compare values, yours are the top values. I left my LDRXN in there too.) I'd pull a significant amount of timing until you get fueling right. WAYYYYYYYYYYYYYY too much for my comfort.  |
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« Last Edit: March 17, 2013, 04:56:26 PM by ddillenger »
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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DDillenger84(at)gmail(dot)com
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savages4
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« Reply #14 on: March 17, 2013, 04:57:27 PM »
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My KRKTE is close to yours its .06105, you're requesting alot less load i'm suprised your hitting 21 psi.. What turbos are you running just borg warners? Seems your duty cycles are about 10 higher then mine
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« Last Edit: March 17, 2013, 04:59:47 PM by savages4 »
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