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The 3xMAP/MAF tables

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Old Sep 16, 2010 | 07:41 PM
  #16  
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Gah I just cannot wrap my head around the math....

If you simplify yours to: "StockXMAP in kPa" toexpr="((x*.67)+0.5) / 2" frexpr="((x*2)-0.5)*.67"

and then start to weigh it against the Evo8/9 MAP16bit scalings:
https://www.evolutionm.net/forums/ec...y-patches.html

I just cannot get the math to work out. There must be some other variable or offset that I'm not seeing...cheeky bastard! LMK, I have a 4-bar sitting in my arm wrest

ps--sorry I didn't see this till today; work's been a nightmare
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Old Sep 16, 2010 | 08:07 PM
  #17  
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Code:
<scaling name="StockXMAP in kPa" units="StockXMAP in kPa" toexpr="((x*2556/3800)+0.5) / 2" frexpr="((x*2)-0.5)*3800/2556" format="%.2f" min="-15" max="35" inc="0.05" storagetype="uint16" endian="big"/>
<scaling name="Omni4barMAP in kPa" units="Omni4barMAP in kPa" toexpr="((5*x/1023)/0.012105) + (0.00842/0.002421)" frexpr="(x-(0.00842/0.002421))*0.012105*1023/5" format="%.2f" min="-15" max="35" inc="0.05" storagetype="uint16" endian="big"/>
The StockXMAP in kPa is TAKEN FROM THE ECU CODE... So hopefully Mitsu got it right

The Omni4bar is taken from the Omni information and calculated from there...
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Old Sep 16, 2010 | 08:16 PM
  #18  
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Man, you still haven't gotten that 4bar, lol. Jon is taking forever

Hopefully it happens in a week or so, I was going to ask for the scalings again soon, going to need them in two weeks prolly.
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Old Sep 16, 2010 | 08:18 PM
  #19  
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Yeah sorry man

There is another table which will require the same work, but its not as important..

I will start a new thread as soon as I can
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Old Sep 16, 2010 | 08:19 PM
  #20  
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Originally Posted by tephra
Yeah sorry man

There is another table which will require the same work, but its not as important..

I will start a new thread as soon as I can
Cool, much obliged Tephra

Any ETA on the 4 bar getting there? Did Jon ship it yet?
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Old Sep 16, 2010 | 08:56 PM
  #21  
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Ok, so I'll just ask. Obviously if you're working on a 2.2L or something, you'll want to scale these tables to adjust for the new load/cylinder.

However, when else should we be adjusting this? What I'm really going after is how/if to use these tables to fix that load dip from quick spool. If we're still on stock engines, should we even tough this (unless swapping for 4bars )?
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Old Sep 16, 2010 | 09:11 PM
  #22  
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I don't think this will change much in regards to your load dip issue; this is basically going to allow proper rescaling of the engine air metering system.
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Old Sep 16, 2010 | 10:11 PM
  #23  
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2.2 should increase this by 10%... or at least that is what seems to work...

im still working on the load dip issue...
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Old Sep 16, 2010 | 10:59 PM
  #24  
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Originally Posted by tephra
2.2 should increase this by 10%... or at least that is what seems to work...

im still working on the load dip issue...
You're already my ECU Hero, but if you figure out the load dip, you'll move up past Mother Teresa for people I respect. It's that serious.

Also more than happy to test, since I actually have the problem. I don't know if the Load Dip is entirely relevant to these tables, so I'm going to stop cluttering this thread.
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Old Sep 16, 2010 | 11:09 PM
  #25  
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Do we have these maps for VIII's and IX's? My load dips right after peak too...
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Old Sep 16, 2010 | 11:10 PM
  #26  
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No.
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Old Sep 20, 2010 | 01:29 PM
  #27  
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Anyone have the MAF/MAP table definitions for the 2008 they'd be willing to post? I have them for the 2010's, but not for the 2008's for some reason.

Thanks.
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Old Sep 20, 2010 | 05:51 PM
  #28  
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Scalings may need to be updated to anything new that Tephra has posted lately.

[code]
<table name="MAF Scaling Part 1" address="5753a">
<table name="Volts" address="615ea"/>
</table>

<table name="MAF Scaling Part 2" address="57592">
<table name="Volts" address="61642"/>
</table>

<table name="MAF Scaling Part 3" address="575ea">
<table name="Volts" address="6169a"/>
</table>

<table name="MAP Mass Air Flow Scaling #1" address="60454">
<table name="MAP" address="62a2e"/>
<table name="RPM" address="62a02"/>
</table>

<table name="MAP Mass Air Flow Scaling #2" address="60178">
<table name="MAP" address="62a2e"/>
<table name="RPM" address="62a02"/>
</table>

<table name="MAP Mass Air Flow Scaling #3" address="5fe9c">
<table name="MAP" address="62a2e"/>
<table name="RPM" address="62a02"/>
</table>
[code]
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Old Sep 21, 2010 | 02:24 AM
  #29  
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4bar has arrived

install and writeup this weekend
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Old Sep 21, 2010 | 04:20 AM
  #30  
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My RA has been a pain in the @ss ever since I put in a set of cosworth cams. They obviously affect the VE of the engine... would I be better off using the numbers from an EVO X in these tables instead of the stock RA numbers?

Keith
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