The 3xMAP/MAF tables
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
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
Thread Starter
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
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 Omni4bar is taken from the Omni information and calculated from there...
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.

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.
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
)?
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
)?

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.
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]
[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]
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
Keith





