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Hello, early JDM ECU question


fivepointnine
Newbie


Galant VR-4 org Post #: 1242710 posted 05/26/18 10:09 PM     Remind Me!  Send Private Message   Edit Post      
Hi, I just picked up a '88 JDM VR4 and want to do some mods to it (16g, 560's, etc) but obviously since it has the early dual board ECU I cannot do ECMLINK on it. Is my only option going standalone? (Like the plug and play Haltech). I have an SAFC for it, but have heard horror stories of them destroying engines, etc. Is there a more reliable piggyback option?

It already has a 3" turbo back, Profec B EBC, walbro with rewire, intake, FMIC and wideband.



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (61.42.178.9) | Report this post to a Moderator

tektic
Senior Member


Galant VR-4 org Post #: 1242712 posted 05/27/18 08:46 AM     Remind Me!  Send Private Message   Edit Post      
you can swap to a usdm ecu and swap some pins around in the harness.

Posts: 1395 | From: ronkonkoma, ny | Member Since: 12/19/12 | IP: (24.189.25.4) | Report this post to a Moderator

fuel
"Just to be pedantic!"


Galant VR-4 org Post #: 1242713 posted 05/27/18 11:19 AM     Remind Me!  Send Private Message   Edit Post      
As above you can swap in a USDM 91/92 ECU however you will lose the ability to control the Cyclone actuation system, unless you can reconfigure the EGR/Evap? solenoid output in DSMLink.

Better yet - you could just find the MD165808 ECU from the 90+ JDM Evolution Galant VR-4 that has a 16G turbo and 510cc injectors from factory, however you would need to find the matching MAF as it is different from the non-Evolution VR-4s. You would also have to swap a couple of pins around to go from the pre-facelift wiring config to the facelift wiring config (change happened in October '89 production date for JDM models, and from 90 to 91 model years in the US).



'91 E39A Galant VR-4 Evolution | '80 A164A Eterna GSR Turbo

-- Visit my JDM Galant VR-4 info & specifications site here! --

Posts: 2085 | From: Toronto, ON, Canada | Member Since: 02/23/09 | IP: (2607:fea8:4e0:b1) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1242717 posted 05/27/18 06:16 PM     Remind Me!  Send Private Message   Edit Post      
Great, thanks for all the info! I think the jdm ecu would be preferable if I can find that specific maf which might be an issue haha.



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (39.7.51.175) | Report this post to a Moderator

tektic
Senior Member


Galant VR-4 org Post #: 1242718 posted 05/27/18 07:58 PM     Remind Me!  Send Private Message   Edit Post      
Honestly a plug and play standalone is about $700. Talk to Nate at performance part out about the one he uses. Hes very happy with it. Just thinking about trying to get 30 year old JDM parts in this country to work in ways they weren't supposed to is making me cringe.

Posts: 1395 | From: ronkonkoma, ny | Member Since: 12/19/12 | IP: (24.189.25.4) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1242725 posted 05/28/18 05:37 PM     Remind Me!  Send Private Message   Edit Post      
Do any other cars share that maf? Iím not having much luck tracking down a vr4 evo maf so far



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (175.223.23.165) | Report this post to a Moderator

fuel
"Just to be pedantic!"


Galant VR-4 org Post #: 1242726 posted 05/28/18 05:50 PM     Remind Me!  Send Private Message   Edit Post      
The one you want is MD171249



'91 E39A Galant VR-4 Evolution | '80 A164A Eterna GSR Turbo

-- Visit my JDM Galant VR-4 info & specifications site here! --

Posts: 2085 | From: Toronto, ON, Canada | Member Since: 02/23/09 | IP: (2607:fea8:4e0:b1) | Report this post to a Moderator

G Galant VR4.org Moderator
JDM Unit
486/1000


Galant VR-4 org Post #: 1242743 posted 05/30/18 08:43 AM     Remind Me!  Send Private Message   Edit Post      
Fuel does halltech or motec make plug and play unit that will control the cyclone? Been thinking about going to a stand alone.



www.japanesenostalgiccar.com
www.nostalgic.co.jp

Posts: 8834 | From: zompton | Member Since: 02/24/04 | IP: (75.86.151.204) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1242904 posted 06/11/18 09:19 PM     Remind Me!  Send Private Message   Edit Post      
So can somebody break it down newbie style to me on how to do a 91-newer ECU.
-what pins on the harness need to be switched?
-I have read that you can set the cyclone actuation within the ECM link software as something to do with the EGR program?
-I will need a 91+ socketed ECU set up for ECM link, is that it?

I would really like to go with the evo0 ECU/MAF, injectors and turbo, I can find the ECU for sale, but I cannot find the MAF used and a new one is over $700 shipped from Japan.



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (143.138.26.244) | Report this post to a Moderator

MX4
Member +++


Galant VR-4 org Post #: 1243032 posted 06/17/18 04:12 AM     Remind Me!  Send Private Message   Edit Post      
A better option than the Evo 0 AFM is one from an Lancer Evo 1/2/3 or 2G DSM. Combine this with 510cc (or larger injectors) and a chip and you would be away. You would need a chippable ECU such as the MD165808. An older dual board, such as the MD128618 are not able to be chipped for the larger injectors or different AFM.



Mitsubishi Galant VR4
12.692 @ 107.40 mph

Posts: 758 | From: New Zealand | Member Since: 04/09/01 | IP: (122.61.177.18) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1243036 posted 06/17/18 07:16 PM     Remind Me!  Send Private Message   Edit Post      
Good call! So I would just need:
"609" maf
1g to 2g maf adapter harness
"808" or similar ECU, then get it socketed for ECMLINK (what pins need switched on the ECU harness from my early dual board?)
510 or 560 EVO injectors

And then of course take it to get a live tune on a dyno.

Am I missing anything?



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (61.42.178.9) | Report this post to a Moderator

AllanL
Heal and Toe


Galant VR-4 org Post #: 1243050 posted 06/18/18 07:47 PM     Remind Me!  Send Private Message   Edit Post      
you would need to get the 5808 ECU first.

the other parts will depend on the availability of the 'tuneable' ECU...

pins 6 and 14 need to be swapped when switching to later than the 8618 ECU.

Posts: 239 | From: NV | Member Since: 08/05/08 | IP: (122.53.101.242) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1243053 posted 06/18/18 09:15 PM     Remind Me!  Send Private Message   Edit Post      
Thank you so much for that info!
There are actually 2 of those ECU's on eBay as we speak, my wife is going to be a little mad at me lol.



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (143.138.26.244) | Report this post to a Moderator

MX4
Member +++


Galant VR-4 org Post #: 1243062 posted 06/21/18 01:58 AM     Remind Me!  Send Private Message   Edit Post      
Also MD150427 or MD153695 will also work, as long as they are the Eprom version of the ECU. A quick was to check is if there is a single "E" on the part number sticker rather than an "A" which is a non-Eprom version.



Mitsubishi Galant VR4
12.692 @ 107.40 mph

Posts: 758 | From: New Zealand | Member Since: 04/09/01 | IP: (122.61.177.18) | Report this post to a Moderator

MX4
Member +++


Galant VR-4 org Post #: 1243063 posted 06/21/18 01:59 AM     Remind Me!  Send Private Message   Edit Post      
Also you dont need to go to ECMLink if you want just a basic setup. A chip can be written for the different AFM and injector. Obviously you would get the tune-ability and other features with ECM though.



Mitsubishi Galant VR4
12.692 @ 107.40 mph

Posts: 758 | From: New Zealand | Member Since: 04/09/01 | IP: (122.61.177.18) | Report this post to a Moderator

fivepointnine
Newbie


Galant VR-4 org Post #: 1243065 posted 06/21/18 05:29 PM     Remind Me!  Send Private Message   Edit Post      
Is there anyone actually still writing chips?



Zak
1988 JDM Galant VR4

Posts: 8 | From: Savannah, GA | Member Since: 05/26/18 | IP: (61.42.178.9) | Report this post to a Moderator

MX4
Member +++


Galant VR-4 org Post #: 1243094 posted 06/23/18 05:52 PM     Remind Me!  Send Private Message   Edit Post      
I do but am NZ based. I dont know of anyone using ECMLink in NZ but believe a few do in Australia.



Mitsubishi Galant VR4
12.692 @ 107.40 mph

Posts: 758 | From: New Zealand | Member Since: 04/09/01 | IP: (122.61.177.18) | Report this post to a Moderator

tektic
Senior Member


Galant VR-4 org Post #: 1243100 posted 06/24/18 02:42 PM     Remind Me!  Send Private Message   Edit Post   
I can write chips. Can you socket your own ecu?

Posts: 1395 | From: ronkonkoma, ny | Member Since: 12/19/12 | IP: (24.189.25.4) | Report this post to a Moderator


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