Evo 7 Ecu in Evo 4

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May 1, 2013 | 09:40 AM

#16

evilevo5tme

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From: chitownburbs

Quote:

Originally Posted by ahmedshaikhani

Hello everyone, I'm using Evo 4 and I want to swap Evo 7 ecu. A friend of mine is selling Ecu MR985180, is it the correct ecu ? Secondly I need to rewire few wires, I got some information of rewire please confirm me is it correct or not

1- Swap cables 8 and pin 22 fuel pump relay with AC control relay
2- Disconnect pin 87 AYC/ACD signal
3- Connect Cable 20 to pin 32 Rad Fan Hi to condensor fan Hi
4- Connect Cable 21 to pin 34 Rad fan lo to condensor fan lo
5- Connect cable 6 Secondary air system to pin 53 of Evo 7 ECU
6- disconnect pin 91 or rewire for IC sprayer manual operation
7- Evo 4 only disconnect pin 40 and ground cable or connect to pin 92 sensor ground
8- Evo 4 only disconnect pin 33 if alternator is not charging battery

I have been reading about changing ROM, can someone please highlight this also ?

Thank You

Hey so for step 7 it says to disconnect pin40 and ground cable or connect to pin 92 is it saying to disconnect ground cable and connect to pin92 or what I don't understand???

May 1, 2013 | 10:05 AM

#17

todd6027

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From: Ireland

Quote:

Originally Posted by evilevo5tme

Hey so for step 7 it says to disconnect pin40 and ground cable or connect to pin 92 is it saying to disconnect ground cable and connect to pin92 or what I don't understand???

disconnect the wire that runs to pin 40 and ground it or you can connect it to pin 92 which is also a ground

Feb 23, 2014 | 01:35 PM

#18

First-evo

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Joined: Feb 2014

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From: Sweden

Im looken to put 6 ECU in My evo 4 to try sort out some problems im having how Did u get on in the end?

Aug 24, 2021 | 10:24 PM

#19

I<3myevo6

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Joined: Apr 2020

Posts: 25

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From: Canada

Sorry to wakeup an old tread, I own an Evo 4, I have recently acquired a Evo 7 ECU(MR 560648) and wish to run the Tephra ROM, can anyone share a perfectly compatible ROM for the same, It would be really helpful and my email is Sharewithraj@hotmail.com.. Thanks in advance..