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HOW TO - Control boost using ECUFLash and the stock boost solenoid

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Old Apr 27, 2009 | 04:49 PM
  #241  
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From: Lombard IL
Originally Posted by GST Motorsports
I think he meant that tuning with broad brush strokes is easier than fine brush strokes.

It works, but it won't make a masterpiece.
yes. You can't miss with the pill set-up.
I LIKE the Gm setup better, but for the kid I did this for, I didn't want him to be able to overboost and blow his motor because he decided he wanted more boost.
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Old Apr 27, 2009 | 05:43 PM
  #242  
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Originally Posted by THUB
yes. You can't miss with the pill set-up.
I LIKE the Gm setup better, but for the kid I did this for, I didn't want him to be able to overboost and blow his motor because he decided he wanted more boost.
words
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Old Jul 9, 2009 | 07:26 PM
  #243  
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UPDATED the post on how to properly tune boost (post #4 in this thread).

Last edited by Evo_Jay; Jul 10, 2009 at 08:32 PM.
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Old Jul 10, 2009 | 12:39 PM
  #244  
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In regards to the new update;
Would 159.4 all the way down in the "Boost desired engine load" tables still be a good way to start?
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Old Jul 10, 2009 | 01:49 PM
  #245  
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From: Hayward
Originally Posted by turbolarry
In regards to the new update;
Would 159.4 all the way down in the "Boost desired engine load" tables still be a good way to start?
No. Zero out error correction. Tune boost curve via duty cycle. Log 2 byte load. Set BDEL table + BCLO to match logged load per RPM, turn back on error correction. Fine tune.
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Old Jul 10, 2009 | 08:31 PM
  #246  
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Originally Posted by turbolarry
In regards to the new update;
Would 159.4 all the way down in the "Boost desired engine load" tables still be a good way to start?
No, not at all. That was in the very begining, when we didnt know exactly how the system worked. For the correct way, look at my updated post (#4 in this thread) or look below...

Originally Posted by GST Motorsports
No. Zero out error correction. Tune boost curve via duty cycle. Log 2 byte load. Set BDEL table + BCLO to match logged load per RPM, turn back on error correction. Fine tune.
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Old Jul 10, 2009 | 08:37 PM
  #247  
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..

Last edited by Evo_Jay; Aug 29, 2009 at 03:58 PM.
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Old Jul 17, 2009 | 05:36 AM
  #248  
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From: NNJ
Do you happen to know the size of the boost pill that is near the solenoid? I am putting my car back to stock and can't find my stock lines. I'm just gonna make new pills on my lathe but need to know the size.

I figure I would use #56 for the pill near the turbo outlet.
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Old Jul 17, 2009 | 11:44 PM
  #249  
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Originally Posted by dudical26
Do you happen to know the size of the boost pill that is near the solenoid? I am putting my car back to stock and can't find my stock lines. I'm just gonna make new pills on my lathe but need to know the size.

I figure I would use #56 for the pill near the turbo outlet.
I would just buy some stock lines. You could probably find some used, maybe from GST. or I think the stock vaccum line setup only cost 20-40
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Old Jul 18, 2009 | 12:56 AM
  #250  
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I bought a new set of stock lines for my Evo5. The Mitsubishi dealer had to get them in from Japan. The interesting thing is that there was no restrictor pill in the line that goes to the solenoid. It has got the restrictor pill that goes in the line by the T near the turbo.

It would be really good if someone could find out the size of the stock restrictor that fits near the solenoid as it may not be included in the stock replacement parts, as I found out.
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Old Jul 20, 2009 | 09:40 AM
  #251  
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From: NNJ
Originally Posted by Evo_Kid
I would just buy some stock lines. You could probably find some used, maybe from GST. or I think the stock vaccum line setup only cost 20-40
Why do that? I already have tons of boost lines lying around, and a bunch of vacuum tees. It's all stuff I accumulated over the course of owning the car and having different setups.

Plus I have bits of spare aluminum rod and I have my own lathe.

Where is your DIY spirit, lol?
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Old Jul 20, 2009 | 10:33 AM
  #252  
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Originally Posted by dudical26
Why do that? I already have tons of boost lines lying around, and a bunch of vacuum tees. It's all stuff I accumulated over the course of owning the car and having different setups.

Plus I have bits of spare aluminum rod and I have my own lathe.

Where is your DIY spirit, lol?
Lol, i dont know.

Anyways, what new car you gettin, or you just going back to stock for fun?
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Old Jul 20, 2009 | 11:06 PM
  #253  
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Originally Posted by GST Motorsports
No. Zero out error correction. Tune boost curve via duty cycle. Log 2 byte load. Set BDEL table + BCLO to match logged load per RPM, turn back on error correction. Fine tune.
Bryan, are there any advantages to changing the scaling of BDEL and BCLO to psi8 and matching the logged boost curve via JDM MAP?

Or is it 6 one way and half a dozen the other?
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Old Jul 20, 2009 | 11:11 PM
  #254  
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From: Hayward
Originally Posted by dude
Bryan, are there any advantages to changing the scaling of BDEL and BCLO to psi8 and matching the logged boost curve via JDM MAP?

Or is it 6 one way and half a dozen the other?
Yes if you have a JDM/Evo 10 3 bar Map sensor you should/can be using PSI-target boost.

MrFred has a full write up in the EcuFlash section.
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Old Aug 18, 2009 | 07:44 AM
  #255  
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Following this thread's pill replacement procedure, I am only hitting ~15 PSI peak. I installed a #58 pill in the line between the turbo and Tee and removed the pill at the solenoid since I'm implementing the new ECU direct boost control ECUFlash mods. I have zeroed out my BEC table just to see what the car did - would this be the cause of the low boost? If I start adding values into the BEC table, should I expect the car to actually hit my target boost or do I also need to add more aggressive MWGDC values? Here is what I currently have programmed:

Name:  Boost_Tables.png
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