How the F do I turn off the closed loop boost control?
04-17-2008, 09:32 AM
#1
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How the F do I turn off the closed loop boost control?
Man, I wish I had never entered any target numbers in the closed loop table. Now that they're in there, it won't let me delete them. 
Here's the problem:
at 4400 rpm I hit target boost ~215kpa
at 5000 rpm ebc pulls duty cycle to ~180kpa
it will then continue to oscilate between 215 and 180 as I continue the pull. MAP looks like a freakin sine wave.
I have to go buy a USB dongle to upload a screen capture, dataloq, and msq. Will do that in a few hours.
Pahhleezzee heallp
Here's the problem:
at 4400 rpm I hit target boost ~215kpa
at 5000 rpm ebc pulls duty cycle to ~180kpa
it will then continue to oscilate between 215 and 180 as I continue the pull. MAP looks like a freakin sine wave.
I have to go buy a USB dongle to upload a screen capture, dataloq, and msq. Will do that in a few hours.
Pahhleezzee heallp
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04-17-2008, 09:57 AM
#2
Set them all to 70kPa, with the closed-loop kPa limit at 20 or so. That'll effectively turn off closed-loop boost control. That's how the pnp base map turns it off, and has worked well for me. I ended up playing with it a bit, but went back to those base settings and it turned off nicely.
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04-17-2008, 01:25 PM
#12
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Code:
<page number="7" size="189">
<constant cols="6" name="bcBins1" rows="6" units="kpa">
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
</constant>
Code:
<constant name="bc_max_diff" units="kPa">0</constant>
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04-17-2008, 01:35 PM
#13
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seems to me it would need a f/w change, not a s/w change, as I want to disable the PID
scott, you want me to simply change the bins all to 0 and add to the bottom
scott, you want me to simply change the bins all to 0 and add to the bottom
<constant name="bc_max_diff" units="kPa">0</constant>
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04-17-2008, 01:37 PM
#14
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no search the string constant name="bc_max_diff" and change that to a zero.
that would force using table2 which is the duty cycle table. dunno why it wont let you use 0 that's what i've always done.
both snippets above are straight out of my MSQ.
that would force using table2 which is the duty cycle table. dunno why it wont let you use 0 that's what i've always done.
both snippets above are straight out of my MSQ.
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04-17-2008, 01:48 PM
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I get it now. I was a little confused, but with the code tags that you edited in, it was no sweat. Thank you, I hope that changing the limit value to 0 will causes EBC to straight ignore what's happening. I edited the table too.
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04-17-2008, 09:05 PM
#16
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2 steps fprward
1 step back
Good news: No more oscillations
Bad news: Here's what all the 0's turned into:
Now what happens is boost shoots up uncontrollably, almost as if there were no wastegate, until it hits overboost protection.
Here's a 70% throttle stab
Here's me modulating boost with throttle position (note: 5th gear to 6k
)
More ideas?
Good news: No more oscillations
Bad news: Here's what all the 0's turned into:
Now what happens is boost shoots up uncontrollably, almost as if there were no wastegate, until it hits overboost protection.
Here's a 70% throttle stab
Here's me modulating boost with throttle position (note: 5th gear to 6k
)More ideas?
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04-17-2008, 09:08 PM
#17
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Also, when I manually edit a .msq with notepad, MT and MLV no longer recognize the file as a .msq. I can still right click and open with, but because MLV won't recognize the file, I can't load the msq for VE Analyze. Which is not good.
Please help. I'm cranky as **** because the water's shut off, I'm tired and stinky, and can't shower.
******* water main broke up the road.
Please help. I'm cranky as **** because the water's shut off, I'm tired and stinky, and can't shower.
******* water main broke up the road.
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04-18-2008, 08:53 AM
#18
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success
These values worked for me. The table remained locked at 10 and the delta remained at 3.
Code:
<page number="7" size="189">
<constant cols="6" name="bcBins1" rows="6" units="kpa">
10 10 10 10 10 10
10 10 10 10 10 10
10 10 10 10 10 10
10 10 10 10 10 10
10 10 10 10 10 10
10 10 10 10 10 10
</constant>
Code:
<constant name="bc_max_diff" units="kPa">3</constant>
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