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log boost with JDM MAP sensor (updated instructions)

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Old Mar 29, 2007, 05:32 PM   #31
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Originally Posted by mrfred View Post
Actually, jcsbanks and Bez are working on this very conversion. May take more than a few weeks, but it looks like it will happen.
Might take them a few weeks, i've been religiously working on this since mid December with one of my software enfgineers and have it running... just want to have hard evidence and a few more road miles to prove it's reliability.
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Old Mar 29, 2007, 06:09 PM   #32
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Originally Posted by Noogles View Post
Might take them a few weeks, i've been religiously working on this since mid December with one of my software enfgineers and have it running... just want to have hard evidence and a few more road miles to prove it's reliability.
well i'll be damned.
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Old May 14, 2007, 12:32 PM   #33
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Instruction change?

So I am getting ready to install my JDM MAP sensor (thanks mrfred!) and I noticed that the instructions for what to modify in your ROM via ECUFlash have changed. For example, the original instructions for changing the "MAP Scaling Table" were...

Quote:
Originally Posted by mrfred
After modifying and saving the ROM xml file(s), launch ECUFlash, and find the new entries. It may be necessary to set ECUFlash to "Developer" mode in the ECUFlash options (and relaunch ECUFlash) to be able to see the tables. For the USDM Evo 9 ROM, the translation table will read:

43 11
70 20
97 31
124 40
151 48
178 57
205 67
232 80
255 255

Change it to the JDM values:

26 20
46 40
66 57
86 78
106 97
126 117
146 138
166 158
186 255
... but in the first post of this thread they now read...

Quote:
Originally Posted by mrfred

After modifying and saving the ROM xml file, launch ECUFlash, and find the new entries. It may be necessary to set ECUFlash to "Developer" mode in the ECUFlash options (and relaunch ECUFlash) to be able to see the tables. For the USDM Evo 9 ROM, the translation table will read:

0.84 11
1.37 20
1.89 31
2.42 40
2.95 48
3.48 57
4.00 67
4.53 80
4.98 255

Change it to the JDM values:

0.51 20
0.90 40
1.29 57
1.68 78
2.07 97
2.46 117
2.85 138
3.24 158
3.63 255
My ROM still reflects the first set of instructions, so the new values don't really make sense to me. For now I'm just going to follow the original instructions (which I saved to a file for future reference). Any idea on why these values changed? Do I need to change something in my .xml file?

Thanks
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Old May 14, 2007, 03:30 PM   #34
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Quote:
Originally Posted by RedV View Post
So I am getting ready to install my JDM MAP sensor (thanks mrfred!) and I noticed that the instructions for what to modify in your ROM via ECUFlash have changed. For example, the original instructions for changing the "MAP Scaling Table" were...



... but in the first post of this thread they now read...



My ROM still reflects the first set of instructions, so the new values don't really make sense to me. For now I'm just going to follow the original instructions (which I saved to a file for future reference). Any idea on why these values changed? Do I need to change something in my .xml file?

Thanks
Sorry about that. You'll need to update your ROM xml file using the updated table definitions in the how-to. Then the values will show up as described in the how-to. More changes to the how-to are coming over the next day or two also. You can follow the current instructions now, but you'll want to check back in a few days because there may be a few new tables that need to be defined and then modified.
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Old May 14, 2007, 04:14 PM   #35
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Quote:
Originally Posted by mrfred View Post
Sorry about that. You'll need to update your ROM xml file using the updated table definitions in the how-to. Then the values will show up as described in the how-to. More changes to the how-to are coming over the next day or two also. You can follow the current instructions now, but you'll want to check back in a few days because there may be a few new tables that need to be defined and then modified.
Mrfred, have you any JDM MAP sensors left?

CJ

Last edited by iTune; May 14, 2007 at 04:16 PM.
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Old May 14, 2007, 04:23 PM   #36
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Quote:
Originally Posted by mrfred View Post
Sorry about that. You'll need to update your ROM xml file using the updated table definitions in the how-to. Then the values will show up as described in the how-to. More changes to the how-to are coming over the next day or two also. You can follow the current instructions now, but you'll want to check back in a few days because there may be a few new tables that need to be defined and then modified.
I also noticed the difference in the values in the tables. I was going to install the JDM MAP today, but I will wait a few days until you get done with all the updates. Thanks for the sensor and all the update work.
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Old May 14, 2007, 04:49 PM   #37
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Quote:
Originally Posted by iTune View Post
Mrfred, have you any JDM MAP sensors left?

CJ
Yes, PM me for details.
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Old May 14, 2007, 06:00 PM   #38
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Quote:
Originally Posted by mrfred View Post
Sorry about that. You'll need to update your ROM xml file using the updated table definitions in the how-to. Then the values will show up as described in the how-to. More changes to the how-to are coming over the next day or two also. You can follow the current instructions now, but you'll want to check back in a few days because there may be a few new tables that need to be defined and then modified.
OK, thanks.

I followed the original instructions tonight when installing the sensor and everything worked great... I'm logging boost perfectly in EvoScan and so far no SES light. I thought I remember reading that the SES light would pop up after the ECU does a test at engine shutdown, but I've stopped and started by car a few times tonight and no SES light.

Does this mean I'm safe or should I be on the lookout for the updated how-to?

Thanks again for the JDM MAP sensor and all your work... HUGE contribution to the Evo community!

EDIT: I changed my "88590015.xml" file to match the how-to and it changed how the values appear in ECUFlash, so I'm all set!

Last edited by RedV; May 14, 2007 at 06:15 PM.
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Old May 15, 2007, 07:32 AM   #39
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With these mods, I'm not getting any CELs in my Evo 9. Two Evo 9 folks have reported CELs, but one guy hasn't read the code yet (could be something else), and the other found an error in one of the tables that he modified. So, nothing concrete yet.
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Old May 15, 2007, 07:39 AM   #40
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Instructions have been updated to include Evo 8 9417008 and 94170014 ROMs. If you don't see your ROM in the list of ROMs (this is a USDM-only mod), please email it to me, and I will find the tables.

I'm now looking again at the '05 Evo 8 and '06 Evo 9 ROMs to see if I can find some additional tables. I may be posting up a few more tables for those ROMs in a few days.
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Old May 15, 2007, 08:06 AM   #41
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Should I wait for these new tables to be located before installing the sensor on a v.15 IX? are you just looking for the fault code tables?
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Old May 15, 2007, 08:47 AM   #42
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Originally Posted by TouringBubble View Post
Should I wait for these new tables to be located before installing the sensor on a v.15 IX? are you just looking for the fault code tables?
I won't be changing any of the current values for the IX and '05 VIII ROMs. I will just be adding more tables if I find them. So, no reason not to install it now. The car will work fine. I don't have any CELs, but I'm still looking for the additional tables.
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Old May 15, 2007, 10:38 AM   #43
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I just installed the JDM MAP sensor and flashed the rom to reflect the changes that mrfred outlined. I started the car and logged @ idle cold. The boost reading is in vaccuum @ -8 or -9. So far so good.
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Old May 15, 2007, 11:07 AM   #44
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No CELs on my IX since the swap an these instructions.
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Old May 15, 2007, 11:07 AM   #45
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Quote:
Originally Posted by nj1266 View Post
I just installed the JDM MAP sensor and flashed the rom to reflect the changes that mrfred outlined. I started the car and logged @ idle cold. The boost reading is in vaccuum @ -8 or -9. So far so good.
You can also log with the ignition set to "ON" but with the engine off. The MAP sensor should read 0 psi. If its off by more than 0.2 psi, you can change the offset in the EvoScan formula. e.g., if you see -0.5 psi with the engine off, then change 14.51 to 14.0. People within 1000 feet of sea level shouldn't need to do this, but people at higher elevations (CO, NM, UT, etc) may want to check this.
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bar, ecu, evo, evolution, flash, formula, grey, ix, jdm, light, map, rs, se, sensor, ses, stock

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