Let's talk through the details of converting a 2003-2004 and a 2005 evo 8 to run a 2006 mivec head/motor.

Getting a evo8 bottom end to work with a mivec head has been discussed elsewhere, so we'll leave that out for now. Basically just tap the back of the block for the mivec oil feed. That topic is being discussed here: https://www.evolutionm.net/forums/ev...k-ix-head.html

So let's assume we're buying a brand new OEM IX longblock from Mitsubishi. Let's also assume we're going to get all of the parts brand new from mitsubishi, so we'll try and include part numbers so this is as technical and specific as possible.

Parts list:
-IX ECU (anyone have the mitsu part number for this?)
-IX Engine wiring harness (or just part of it?)

On the existing 8 ecu, there are 4 plugs. On the 9 there are 3 plugs. What harness plugs go to what, and what needs to be changed? Are there any major differences between wiring in the 2003-2004 vs 2005?

Evo8 ecu pinout: http://www.roadraceengineering.com/e...-ecuwiring.htm
Evo9 ecu pinout: https://www.evolutionm.net/forums/3012204-post47.html

Let's try and keep this discussion as technical as possible please.

 

you can keep your original ECU by running the HKS valcon pro controller for valve timing .

 

Can that device actually directly control mivec though? I don't have any experience with it personally; could someone else verify?

 

This was suggested in another thread:

 

op asked to keep it technical...no need for the "sell your viii and buy a ix" comments

 

ACD.

If being installed on a non-ACD evo, there will be 3 harnesses left unplugged in the area where the ACD pump is on ACD evos.

There will also be one larger harness connector (for ACD) around the passenger floor area (ecu area) that is not used.

 

i personally verified and running this ... i updated a 8 block with cosworth big valve and HKS 4G63 Vcam pro mivec kit that comes with the valcon controller . it the controller needs the REV and intake pressure data to get a 3D map to controller the cam angle . up to 30 degree .

here te write up :

http://www.hks-power.co.jp/db/produc...2002-AM009.pdf

 

That test doesn't get very specific about wiring the valcon into an evo 8. So I assume you did the standard IX head onto VIII bottom-end conversion, but would you mind sharing any more specifics about wiring up the mivec solenoid, second CAS, and the valcon pro?

 

here a vendor with the controller , you get to keep your stock ecu .
http://www.zenaracing.com/shop/produ...19ca8c23175a5c

 

I did this on an Evo IV with a IX engine. Bulding the harness is pretty tedious but it worked out well in the end. It is just a matter of comparing the two wiring diagrams. BTW, the plugs are different between the 8 and 9 so it is not just a matter of switching around wires in the existing plugs.

 

If you look at the description it says:

For PowerWriter licensed shop only. (Full Set License)

What does that mean? I assume you have to have it flashed or programmed by someone with a license to do so. That is not a good resolution for doing the swap. I would want to do something like this in the future and would be great if we listed everything out needed. Even better if we could use the exact same ECU as the IX's (more map resolution and memory space) keeping all the factory failsafes in place!

Looks like Ali already did this with Atlantic Motorsports. Maybe him or Atlantic can comment on this and let us know what they ran into.

Link: https://www.evolutionm.net/features/article.php?id=113

~Zach

 

Umm, does that say $850? Holy sticker shock batman. I think looking into wiring in an IX ecu sounds like a better idea at that price-point. Looks like it might work, but dealing with the hassle of learning how to use that thing looks a little redonk.

Right, so using a boomslang harness as described above would be preferable in the evo8-evo9 ecu case.

Yup, that is the thread that kinda started this thread. Any detailed input from them would be greatly appreciated.

 

I was just thinking... you may not even have to solder the two boomslang/skunk2 harnesses together... If I remember correctly MalibuJack has EVO VIII and IX pins for purchase for his WBO2 replacement of the rear O2, so in theory you could purchase EVO IX pins from him and completely rebuild a hybrid VIII/IX boomslang/skunk2 harness without any soldering at all The hardest part would be the wiring diagram... I am going on vacation then on a short 1 month det in the next 2 weeks so I will see if I can create a wiring diagram for this while I am on the boat, I can't guarantee anything, but I will do my best.

 

kind of off topic and i dont feel like starting a new thread..

Are the evo 8 and evo 9 cranks exactly the same? They should be right? its the same block correct?

 

Alright scheides I went throught the two wiring diagrams today, and it seems like the EVO VIII has quite a few more sensors than the IX if the diagrams are correct. I seriously need some better diagrams and ones that are absolutely correct before I spend anymore time on this...