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disabling lean spool

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Old Nov 16, 2008 | 08:08 AM
  #46  
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From: Tri-Cities, WA // Portland, OR
Originally Posted by chmodlf
What does the lean spool code do other than to check what the rpm start and stop numbers are? Does it take into account temp, knock count, load value, etc?

Does is just add 1 to the fuel value?
The lean spool subroutines (the algorithm is broken up into two subroutines) lean out the AFR on a timer so that when the load passes the lean spool load start threshold, it leans out the AFR and gradually richens as time passes above the load threshold. The maximum amount it can be leaned out is indicated by the lean spool AFR mapping table. There is also some code to keep the AFR lean before passing the lean spool load threshold so that there isn't a big discontinuity in AFR when lean spool kicks in. Turning off lean spool with the periphery bit causes both subroutines to be bypassed.
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Old Nov 16, 2008 | 09:43 AM
  #47  
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Originally Posted by eclipzed
boosted200ser,

You sir ROCK!!!!!! I never thought of looking at the main table values!! Once I changed them to match my previous ROM values, it fixed my issue. I now have good gas mileage!! Thanks again!!! Have a !!!
You live you learn. No problem. I think I will have a beer, it is noon and all.
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Old Nov 16, 2008 | 10:03 AM
  #48  
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From: CT
Originally Posted by mrfred
The lean spool subroutines (the algorithm is broken up into two subroutines) lean out the AFR on a timer so that when the load passes the lean spool load start threshold, it leans out the AFR and gradually richens as time passes above the load threshold. The maximum amount it can be leaned out is indicated by the lean spool AFR mapping table. There is also some code to keep the AFR lean before passing the lean spool load threshold so that there isn't a big discontinuity in AFR when lean spool kicks in. Turning off lean spool with the periphery bit causes both subroutines to be bypassed.

Nice. I have been wondering about this for some time. Lots of speculation in this forum but no real answers.

How does the code handle how long the timer runs?

Thanks
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Old Nov 16, 2008 | 11:16 AM
  #49  
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From: Tri-Cities, WA // Portland, OR
Originally Posted by chmodlf
Nice. I have been wondering about this for some time. Lots of speculation in this forum but no real answers.

How does the code handle how long the timer runs?

Thanks
There is a table to adjust the decay time.
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Old Nov 16, 2008 | 12:27 PM
  #50  
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From: Opelika,AL
Originally Posted by boosted200ser
You made the mistake I made. Check your maps again when you select all the top load % doesnt change. You have to click on the % line and change that as well.
Originally Posted by eclipzed
boosted200ser,

You sir ROCK!!!!!! I never thought of looking at the main table values!! Once I changed them to match my previous ROM values, it fixed my issue. I now have good gas mileage!! Thanks again!!! Have a !!!
Originally Posted by tephra
what u talking about? which table?
I am lost here, was this the decay table you guys are talking about or some enable/disbale tables??
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Old Nov 16, 2008 | 02:59 PM
  #51  
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We aren't talking about a decay table. We both switched over to the tephra mod roms and just copy and pasted. Not paying attention to the load % at the top of the table.
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Old Nov 16, 2008 | 03:31 PM
  #52  
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^ what table?
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Old Nov 16, 2008 | 04:07 PM
  #53  
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Yeah, WHAT table???
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Old Nov 16, 2008 | 07:03 PM
  #54  
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yeah Qwat table lol ...
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Old Nov 16, 2008 | 10:41 PM
  #55  
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Lets see fuel and ignition were my main ones. Here a picture is worth a thousand words. To an untrained person, like myself, these maps looked the same and I couldnt understand why the car would go so rich at very low load. Went back through and actually paid attention and found my problem. Make any sense now?
Attached Thumbnails disabling lean spool-fuelmap_325x288.jpg  
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Old Nov 16, 2008 | 10:43 PM
  #56  
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oh right. so you didn't rescale the load axis??
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Old Nov 17, 2008 | 07:45 AM
  #57  
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Yep being a newb sucks. I followed the writeup on how to do everything, either I missed that part or it wasnt there.
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Old Apr 27, 2009 | 08:12 AM
  #58  
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From: D
EDIT: I figured it out.

Last edited by SEEnoEVO; Apr 27, 2009 at 08:16 AM.
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Old Aug 4, 2010 | 11:29 PM
  #59  
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thanks for the info guys but could someone kindly explain this in steps

1. click here
2. you'll see X
3. change X to Y

done
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Old Sep 22, 2017 | 08:28 AM
  #60  
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Quick question regarding this.


If I "0" out lean spool start and "0" out lean spool stop then lean spool is full disabled? Do I need to zero out any parameters in any of the other options such as threshold trailing time etc. in v7?

I just want to make sure it is fully disabled


Thanks,Dave
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