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Oct 12, 2009 | 01:07 PM

#181

RALLInspired

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Joined: Sep 2009

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From: Whittier, Ca

let me get this straight... it doesn't matter what MAP sensor we use in terms of changing anything in the ECU other than setting it for load based or psi based. the only thing is setting up our xml scalings for logging?

changing the map sensor scalings in the original roms was only for emissions...?

Last edited by RALLInspired; Oct 12, 2009 at 01:09 PM.

Oct 12, 2009 | 01:08 PM

#182

Jack_of_Trades

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From: Opelika,AL

I just need to figure out how MrFred figured out the scaling formula's for Psia16,Psia8 and BoostErrorPSI for those 2 sensors so I can make scalings for the other popular map sensors and then I can add them all tot he XML to be easily chosen on the dropdown list. It's be easiest to zip the file and add a folder with instructions on what to change the values to for different map sensors, which I can make for you as well. Gotta go on a taco bell run right now though lol.

Oct 12, 2009 | 01:10 PM

#183

Jack_of_Trades

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From: Opelika,AL

Quote:

Originally Posted by RALLInspired

let me get this straight... it doesn't matter what MAP senor we use in terms of changing anything in the ECU other than setting it for load based or psi based. the only thing is setting up our xml scalings for logging?

changing the map sensor scalings in the original roms was only for emissions...?

Yes, the FUNCTION of the engine isn't affected at all by a map sensor in this rom. We just need the ECU controlled boost section to get input from the map sensor and then we rescale the tables so it reads accurately for ease of adjustment and accuracy. I'm a slow learner but I get it now haha.

Last edited by Jack_of_Trades; Oct 12, 2009 at 06:30 PM.

Oct 12, 2009 | 01:12 PM

#184

phenem

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From: Central PA

Quote:

Originally Posted by Jack_of_Trades

That means we need to have a relabeled and converted version of the following for each of the most popular MAP Sensors used:

MAP scaling
Psia16
Psia8
BoostErrorPSI

let me work on adding this stuff in the XML and I'll email it to you Phenem.

Sounds good

Oct 12, 2009 | 01:20 PM

#185

phenem

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From: Central PA

Quote:

Originally Posted by Jack_of_Trades

Actually I don't think they need changed. Only the scaling does for the sensor. Those values are specific to the ECU that don't change based on the MAP sensor. So just the MAP scalings only need to be changed.

Oct 12, 2009 | 01:30 PM

#186

RALLInspired

Newbie

Joined: Sep 2009

Posts: 60

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From: Whittier, Ca

Quote:

Originally Posted by Jack_of_Trades

Yes, the FUNCTION of the engine isn't affected at all by a map sensor in this rom. We just need the ECU controlled boost section to get input from the map sensor and then we recale the tables so it reads accurately for ease of adjustment and accuracy. I'm a slow learner but I get it now haha.

excellent... glad it was confirmed because this new rom was already giving me a headache lol. will be testing on some 03 and 04 8's soon and will be reporting back. thanks again.

Oct 12, 2009 | 01:38 PM

#187

Jack_of_Trades

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From: Opelika,AL

Quote:

Originally Posted by phenem

That would be most excellent. What thread are those 2 map sensor scalings from? I know I came across them but I can't remember where lol.

EDIT:

found it. HERE

It looks like those scalings ARE required for the PSI based boost control tables.

Last edited by Jack_of_Trades; Oct 12, 2009 at 01:40 PM.

Oct 12, 2009 | 01:51 PM

#188

phenem

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From: Central PA

Quote:

Originally Posted by Jack_of_Trades

Crap! I saw that just now too! Well it looks like we will have to create the scalings for each sensors just label them in some way that we can select the scalings that are needed and we will need to write up a how-to section to implement psi/load based control if you are using anything other than the JDM MAP sensor (because that's the default one I have everything set to)

Oct 12, 2009 | 01:53 PM

#189

phenem

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From: Central PA

Look here:

Code:

JDM 3-bar only 
----- (don't add the "-----")
<scaling name="BoostErrorPsi" units="psi" toexpr="(x-128)/(8*5.18)" frexpr="x*8*5.18+128" format="%.1f" min="-3.1" max="3.1" inc="0.1" storagetype="uint16" endian="big"/>
<scaling name="OffsetWGDC" units="WGDC Change" toexpr="(x-128)/2" frexpr="x*2+128" format="%.1f" min="-64" max="63.5" inc="0.5" storagetype="uint8" endian="big"/>
<scaling name="psia8" units="psia" toexpr="x/(5.18*2)" frexpr="x*(2*5.18)" format="%.1f" min="0" max="24.6" inc="0.1" storagetype="uint8" endian="big"/>
<scaling name="psia16" units="psia" toexpr="x/(5.18*2)" frexpr="x*(2*5.18)" format="%.1f" min="0" max="32" inc="0.1" storagetype="uint16" endian="big"/>
-----

OMNI 4-bar only
----- (don't add the "-----")
<scaling name="BoostErrorPsi" units="psi" toexpr="(x-128)/(8*4.23)" frexpr="x*8*4.23+128" format="%.1f" min="-3.8" max="3.8" inc="0.1" storagetype="uint16" endian="big"/>
<scaling name="OffsetWGDC" units="WGDC Change" toexpr="(x-128)/2" frexpr="x*2+128" format="%.1f" min="-64" max="63.5" inc="0.5" storagetype="uint8" endian="big"/>
<scaling name="psia16" units="psia" toexpr="x/(4.23*2)" frexpr="x*(2*4.23)" format="%.1f" min="0" max="32" inc="0.1" storagetype="uint16" endian="big"/>
<scaling name="psia8" units="psia" toexpr="x/(4.23*2)" frexpr="x*(2*4.23)" format="%.1f" min="0" max="30.1" inc="0.1" storagetype="uint8" endian="big"/>
-----

The only difference is the psia16 and psi8 and boosterror which is basically what you posted earlier! That's what I meant earlier is that the Offset shouldn't change based on the MAP sensor. So basically we only need the psi scalings which you posted so we are good to go!

Last edited by phenem; Oct 12, 2009 at 02:07 PM.

Oct 12, 2009 | 02:03 PM

#190

donour

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From: Tennessee, USA

With the Omni sensor there is more than just a constant scaling. The readings are offset .504 psi. 0 pressure (vacuum) is _not_ 0 volts.

reference: https://www.evolutionm.net/forums/7594436-post43.html

d

Oct 12, 2009 | 02:09 PM

#191

Monochrome

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From: Avondale, PA

Ah well this explains why i'm not getting any boost control error corrections when I flashed this ROM.

Oct 12, 2009 | 02:15 PM

#192

rolly1818

Registered User

Joined: Nov 2007

Posts: 1,507

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From: Trinidad

can anyone confirm i can use 9653 on a JDM???

i dont see why not...

Oct 12, 2009 | 02:23 PM

#193

phenem

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From: Central PA

Quote:

Originally Posted by rolly1818

can anyone confirm i can use 9653 on a JDM???

i dont see why not...

According to your profile you have a JDM EVO 9. The 9653 ROM is an EVO 8 ONLY!

Last edited by phenem; Oct 12, 2009 at 02:25 PM.

Oct 12, 2009 | 02:24 PM

#194

Jack_of_Trades

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From: Opelika,AL

Quote:

Originally Posted by phenem

Yes you can that is what I am running

Really? you have a JDM Evo?

Oct 12, 2009 | 02:25 PM

#195

phenem

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From: Central PA

Quote:

Originally Posted by Jack_of_Trades

Really? you have a JDM Evo?

I assumed he knew what he was talking about, LOL!

Looks like he has a JDM EVO 9! So NO he cannot!