RA/TC-SST Service Manual
 

Ralliart Technical Manual: http://www.roadraceengineering.com/r...0002100-00.pdf

Mitsubishi Engineering Product Overview: http://www.mitsubishi-motors.com/cor...008/20e_06.pdf

TC-SST Service Manual: http://www.evoscan.com/manuals/EvoX/...005300-22C.pdf

TC-SST Overhaul Guide: http://www.evoscan.com/manuals/EvoX/...005700-22D.pdf

Assorted Evo X Manuals: http://www.evoxservicemanual.co.uk/

I am trying as hard as I can to pull the patent number for the MR TCU. I am having a hard time tracking down the specific manufacturer of the part in question. I am fairly certain that it is made in-house. However, the only references that I could find to Mitsubishi patents in the past several years applied to the CVT INVECS-III system.

I have gone through all of JECS (UJ), just for good measure. I can't find anything, save for one patent in 2004 (estimated time frame for Ralliart TCU development). I am trying to confirm that it is the correct part, but I can't find it sold anywhere in the world. I will keep up the search. I must have an MR TCU!

My German is getting pretty good, by the way. I am almost understanding their gibberish.

I may have to learn Japanese, too. That probably isn't a bad thing to learn, though.

Are those TC-SST overhaul instructions directly from mitsubishi???

They appear to be.

try searching under Getrag!


https://www.evolutionm.net/forums/mi...st-tranny.html

Although Getrag is a very talented transmission manufacturer, you will find that they often don't make controllers for their own products. In many cases, JECS and others produce the actual TCU. I know that VW and Subaru both use JECS controllers for their products. Additionally, Mitsubishi has their own, in-house line-up of electrical controllers. You will find that almost every automatic transmission utilized by Mitsubishi vehicles has an "INVECS" controller, which is a Mitsubishi patented and proprietary system. The confusing bit is that Mitsubishi ended the INVECS program with the CVT transmission (dubbed the "INVECS-III"). You have to figure that the average R and D cycle for the production of a new model is about 3-5 years. That means that the transmission controller for the TC-SST might be as old as 2003 or 2004. During that time, it is clear that Mitsubishi, in at least one division, was working on the INVECS-III system. I found the patent filing yesterday. That means that it is possible that the construction of the TCU for the TC-SST was sub-contracted out to a firm with experience building high-quality controllers for already existing dual-clutch transmissions. For VW, who has been using the DSG gearbox for quite some time, JECS was that manufacturer. In 2004, about the time-frame for development of the TCU for the TC-SST, JECS applied for a series of patents (10 in this country alone) regarding a new, comprehensive transmission controller. After reviewing the patent, the stated parameters and goals of the project do fall in line with the specifications of the current RA and MR spec TC-SST transmission(s). If this were to be the case, that is great news for the Ralliart community. It is theoretically possible that JECS will have developed a part number for the completed MR TCU (hopefully, as the DSG controllers for VW and auto controllers for Subaru are available and listed as "new"). That is the hope, anyways. JECS has produced parts for Mitsubishi before, so this isn't unprecedented. However, this research that I have done is very incomplete. I am sure that there are some on this board who know vastly more about the nature of this beast than I do. That is merely speculation on the possible origins of our TCU. If anyone has information that furthers this knowledge-base, please let me know. This isn't about me being proved right or wrong. Again, that is merely speculation.

Makes sense. Each mfgr will have a different application and have to tie it into unique and proprietary engine ECU coding for the platform. But the :mitsu:shift schedule is rudementary at best! There are so much smoother schedules for other Getrag products. It is like riding with a kid new to clutches {pcfreak}...

Can shift but not smoothly and not always recognizes when to downshift and when to coast (clutch in).

Question NFSLancerRA,

Are you researching to potentially add something to your product line?

I'm assuming this is for a launch control/super-sport mode to be added to the RA correct?

If so, and lets say you were able to track down the actual manufacturer of that part, would it be possible to just order the TCU unit from the MR and put it in the RA? I guess it would be a plug and play thing...

I'm not savvy in any of this so my above question may seem rudimentary, but maybe keeping it simple can help us get to the bottom of this.

If there's anything to do to help, let me know. I'd like to one day be able to get this on my car too. Any scrapped EvoX's in your area? Maybe you can get one off an accidented one and see if it works with the RA.

That being said

The theory is that it is in fact plug and play. I see no reason why it wouldn't be, either. The clutches that I have been working on came from a wrecked MR. I looked at buying the TCU, but it didn't work out.

Either way, I want a new one. The likelihood is that I would have to strike some sort of deal to get them. The good news is that I have a contact that can buy direct from JECS. The bad news is that I don't know what to order or if I even can...YET.

If I can source this part (and that is a big IF), I will relay that information through this site. If we have to put together a group and buy ten of them, I will cross that bridge when I come to it. I don't plan to sell this part. I just want one.

Yes

I need to find an Evo MR TCU badly. I'd hunt through the junk yards for one but not many Evos in the South.

Found this:
http://car-ecu-repair.com/mitsubishi...rol-system-21/

And this seems to be referencing transmission logging:
http://srm.cnlaunch.com/productDetai...%C1%D0&Parts=4

I know that Bryan posted pictures of a TCU unit awhile back. Bryan, I have figured out where the manufacturer information is located. Do you still have the TCU?

What if Melco is still the TCU manufacturer and not JECS?

It is plug and play. It has been done.

In fact I believe the MR and RA TCU share the exact same part numbers, just a different ROM.

It might be easier to figure out how to flash the ROM into the TCU then source TCU's but I haven't looked much into it yet.

Those TCU photos where from SSP.

That is your world. You got me there. This is the only thing that I can do, on my own.

That would complicate things.