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Old Dec 16, 2007, 03:12 PM   #1
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USDM Evo 9 ECU pinout here

I decided to go through the USDM Evo 9 Factory Service Manual this morning to verify the GEMs Evo 9 ECU pinout that's been circulating around on EvoM. Turns out that the GEMs pinout only partially correct for USDM Evo 9. I'm guessing that the GEMs pinout must be for a JDM or EDM Evo 9. I've posted my current draft of the USDM Evo 9 ECU pinout here. There are a few descriptions that are probably not yet totally accurate, and I don't have wire colors yet. I'll add that stuff later.

I kinda got carried away on this because I'm trying to find the unused ADC inputs on the USDM Evo 9 ECU. Got something in the works...

EDIT: Pinout updated with info on unused pins on ECU.

Feb 2, 2008: Pinout updated with more info on the 12 V power pins.
Attached Files
File Type: zip Evo 9 USDM ECU pinout.zip (98.0 KB, 225 views)
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Last edited by mrfred; Feb 3, 2008 at 11:00 AM.
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Old Dec 16, 2007, 03:28 PM   #2
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Good stuff man. I am assuming the colors would match up to the GEM's? Atleast for the ones that are they same
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Old Dec 17, 2007, 08:24 AM   #3
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Good to know. I've been using the old pinout and luckily everything I needed has been correct. Thanks for taking the time to define this for the USDM cars.
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Old Dec 17, 2007, 10:18 AM   #4
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I posted this same question a while back in the other pinout thread. So does the IX have an EGR? I have never heard of VVT equipped cars to have EGR systems nor do i see one anywhere on the exhaust but i see it listed. I am guess maybe it is just there but the ECU ignores it???
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Old Dec 17, 2007, 10:32 AM   #5
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Originally Posted by MR Turco View Post
I posted this same question a while back in the other pinout thread. So does the IX have an EGR? I have never heard of VVT equipped cars to have EGR systems nor do i see one anywhere on the exhaust but i see it listed. I am guess maybe it is just there but the ECU ignores it???
Yes, the USDM Evo IX has an EGR system. The ECU does not ignore it.
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Old Dec 17, 2007, 10:37 AM   #6
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Where in the exhaust stream does it bypass some of the gases though?
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Old Dec 17, 2007, 10:37 AM   #7
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thnx!
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Old Dec 17, 2007, 10:55 AM   #8
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Where in the exhaust stream does it bypass some of the gases though?
The passage from the exhaust to the EGR valve appears to be built into the cylinder head.
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Old Dec 17, 2007, 11:00 AM   #9
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Oh ok that would make sense then. I have seen pictures of the JDM motor where the two nubs on the exhaust manifold have lines coming out of them that appear to be EGR. That is how i am used to EGR systems being used. In some cars they use cam overlap to grab some of the exhaust back into the cylinder. I am surprised mitsu didnt so something like that. Anyway thanks for the info.
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Old Dec 17, 2007, 11:03 AM   #10
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Oh man i think i found my problem.............
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Old Dec 17, 2007, 11:10 AM   #11
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Originally Posted by MR Turco View Post
Oh ok that would make sense then. I have seen pictures of the JDM motor where the two nubs on the exhaust manifold have lines coming out of them that appear to be EGR. That is how i am used to EGR systems being used. In some cars they use cam overlap to grab some of the exhaust back into the cylinder. I am surprised mitsu didnt so something like that. Anyway thanks for the info.
Those are the lines for anti-lag. :-)
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Old Dec 17, 2007, 11:11 AM   #12
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^^ oh hot!
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Old Jan 13, 2008, 09:18 AM   #13
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New version of pinout attached to first post. Fixed a few errors and added a little more detail.
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Amsoil cone filter :: cardboard cold air box :: AMS LICP :: MIL.SPEC TB seals :: English Racing ported EM and HS :: Titek v2 O2 :: Helix v2 DP :: MIL.SPEC 100 cps cat :: RRE Stealth Stainless :: Walbro :: Wilson fuel rail :: FIC Bosch 1100s :: E85 :: GM BCS :: SpoolinUp COP :: self-tuned :: 370 wtq/410 whp ER Dynojet, 66F :: VDR 5.71, 330wtq/360whp MD mode, 370wtq/395 whp DJ mode, 70°F

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Old Feb 3, 2008, 11:01 AM   #14
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Added more info on 12 V power going into the ECU.
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Old Feb 3, 2008, 11:08 AM   #15
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Mrfred,

Good info, I have just received the US EVO9 ECU - square pins!
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