My searches are turning up empty... Keep getting GM IAT info.


Know there must be a thread on here with the Evo9 MAT sensor scaling.


Or better yet a JDM Evo9 .xml with the MAT table included.

The JDM Evo9 don't seem well supported and I'm unsure which one is the best supported, "universal" one to search for.


Any help, hints, or .xmls would be greatly appreciated.

Thanks.

 

Ceddy can't you just work from the speed density evo 9 rom?

For example the IAT scaling table for the 8859 variant is at b070 and the volts at b106.

 

Perfect, thanks very much.

Wasn't sure if GM IAT or JDM MAT was in the SD roms.

 

Anyone know if the SD MAT Scaling for IAT Scaling Table is correct in the 88591715 from the TephraMod V7 thread?

Looks like someone copy and pasted it as a int8 when should of used hex8.
(Actually looks like someone copied a *F and pasted *C.)

According to table max readable temp is 127F or 53C.

 

Now that you mention it it looks like even my rom is doing that as well.

I found mrfred's origional MAT path here

https://www.evolutionm.net/forums/ec...e-logging.html

The scaling was the most recently updated for the GM IAT I think I'll update the scalings I have with his.

 

Here you can see the Evo9 MAT tables, scaled in Hex, to avoid confusion from different scalings.

The 88591715 from TephraMod V7 thread, IAT values are around half what they should be. This makes the temp readings half what they should be.


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If anyone has the JDM Evo9 MAT table it would be a great help.
Trying to add the JDM MAT to Evo5/6 Speed Density.

I have some .xmls, but think the tables they have is the MAF IAT, not the MAT.

 

I saw that as well with one of the roms I patched. I think as you said someone copy and pasted the SD rom with the Celsius values in a Fahrenheit table. I have since corrected it on my v2.0 roms if you care for it

The scaling for the table in F are volt16 and tempscale.

There aren't too many places where you can see a chart of pull up values for this sensor and temps but i found one and the values are actually not too far off. I have to imagine that the scaling mrfred came up compensated for something in our pull up.

http://www.innovatemotorsports.com/f...php/t-988.html