Thanks for the start. I have, at last count, around 140 trans maps to go through one by one. Should keep me busy for a little while :-)


So long as the wiring is identical, there is some hope that eventually we may be able to find the way to get your gear position display to work. I have a feeling it may be something to do with the MUT table and may be as simple as changing a memory address at one of the points. So if you have some time it might be a good idea to compare the tables between known working versions and your own.

 

The map addresses are identical in 80700010. I did some testing today and the trans responded as your maps say. The scale appears to be incorrect though. To me it uses 41882 and is Volts16 which makes it TPS volts.

TC Lockup map did not have any effect for me though.

 

Mattjin,

Actually I did I downloaded a working ECU with gear display and flash it to my ecu but it wont work. My guess is that ecuflash will not write if the definition file do not provide the info/data.

Likewise, I added Monsta gear data definition and brought up my rom file there's no data to view. I will try to read my ecu later and see if the gear info is available.

I used ultraedit to compare both ecus I found that the JDM version with the gear display activated has many different addresses. I dare not touch anything since I dont know where to look for the gear data.

 

I may have got some headway with a wiring diagram for the GT-A. I did a little searching over the Mitsubishi Magna (Aussie model car) and the KJ model uses the same connectors as the GT-A. It is a 6-cylinder but so far pin for pin it seems the same. Temp sensors, TPS, MAF, etc... all the same pin. The transmission pins are correct too. The obvious things left to check that the injector pins are blank on the GT-A. The point is being able to scope the outputs to help zoom in on map changes, in that way I can ID maps alot quicker.

Almost forgot, I scoped the DCC output today and it does some weird stuff. It is the top right pin on the far right connector. I am starting to think it is not the TC clutch or at least not the only thing controlling it. Driving around today I can watch it on around 50% duty, and it does drop to 0% as the lockup releases at 1.46V TPS. The thing is that it will sit around 45 to 50% duty while cruising and then you will later feel the TC start to lockup. So it is not the only thing controlling the lockup, just part of it.

The other thing. I have found all of the transmission 2D and 3D maps as well as all of their scaling addresses. I know the transmission uses an input and an output shaft speed sensor, but has anyone done the mathematics to view them correctly? The same for the oil temp sensor? Or better yet can anyone tell me what MUT address to log to see them? Does Evoscan actually use the same MUT addresses as the factory MUT2 tool, as the addresses are listed in the workshop manuals.

 

The Mut tool items as listed in the service manual dont match the evoscan/mitsulogger addresses. Wish it was that easy

The mut table should be referenced in the disassembly. Im not that flash at disassembly, but I would imagine the mut addresses are referenced in the subroutines. So the axis data subroutine should have that reference to the mut table.

 

Its not that easy either. In the base disassembly it lists the memory addresses, but they are very rarely exactly pointing to the MUT table. At least with my limited ability I havent found the easy way :-) They are usually off by a bit or two.

Now the difficult stuff. The trans part of the code is only partly disassembled. 132 x 2D maps and 35 x 3D maps!! It is not as well labelled as the engine control disassembly and with virtually no-one working on it there is no base work to start from.

Point of interest. My definition file now sits at 105kb!

 

Yeah- Ive been working through with IDA Pro and found pretty much the same amount of maps. <105kb only 89kb but Ive got less engine stuff than you I think. Just about everything is highlighted in Maptracer in that section of the rom.

Its just finding out exactly what each of them do- they are not labelled very well as you mentioned.

I am going to setup mitsulogger with all the MUT addresses that havent being found (in batches) and go through and do a set run of gear changes etc and see if I can isolate the tranny ones then work backwards from the addresses in IDA.

Im super happy to waste fuel testing anything you find. I think the main ones that will interest most of us are:

Upshift speed/pressure (found)
Downshift speed/pressure
Temperature compensations that effect shifting speed etc. (found some, just gotta test)
Adjusting the kickdown point (especially in 5th gear grrrr)
The timing reduction when changing gear (found it just gotta test it)
Reducing the effects of fuzzy logic on Tiptronic mode.
AND it would be cool to get a gear readout in Auto mode

There are ALOT of maps which are for the fuzzy logic and although important, they arent as important as Tiptronic performance.



Mattjin- I would personally like to thank you for the time you have spent on this. I only found the upshift pressure and speed for doing the drags and have been too busy to find/test more until now. So if you want to spread the load, let me know.

 

My GT-A displays the gear position while in Drive. :-P

Thanks. I didnt actually know anyone was bothered with the autos. They are a virtual non-existent market for tuning which is why I have been so forthcoming with the map info.

The problem we are at now is that I dont know much about how an automatic works. I am learning fast, but it is making me cautious to not adjust anything too much to risk damage to the car, which is my daily driver. The Magna manual I am using now is for the F5A5 box but it all seems very similar. Besides the TC Lockup one of the first things I am looking for are the shift rpm points. I am tired of the box religiously sticking to 3rd gear even down to walking pace and then dropping to 1st. It doesnt want to use 2nd unless I give it enough throttle. So most of the time it is in 3rd and then flairing its way back up to speed. Surely it cant be good for long term reliability.

 

Majority of the 3D 4/8 cell maps are temperature compensation maps ..

 

Hi All,

Great Works!!!
For all, please PM or email me ( k_yong3671@hotmail.com ) your mailing address, I will send the airtrek manual Mitsubishi engine and trans manual in DVD. Otherwise, download from Sub7 ftp server. By the way, Sub7 I can’t logon to your Ftp Server, please advice. Sub7 you are from KL rite? Maybe I can pass you the files, when I back form sabah end of the month.

Also, Mattjin, Monsta, did you guys received any of my PM and email, haven’t got any reply from you guys yet???!!!!!!

Cheers

 

Sorry dude- been too busy with all the car/ecu and forgot too respond.

I have the Airtrek Service manual and part of the trans manual. But im keen for the rest of the trans manual, if you pm me the FTP

Cheers

Aaron

 

Hi Monsta,

i am still waiting for Sub7 for his reply on the FTP Server, cos i am having problem logon to his server. Maybe u can PM me your mailing Adress then i will send you the DVD. Otherwise, we have to wait for Sub7 to response regarding this matters.

By the way, something wierd happen I had an issue in ecuflash, there's seem to have indentical ECU ID. when i open the 256kb hex for 2003 airtrek (89970010 originally) it identifiied it as 83540008 which is the 512Kb hex for 2004 to 2005 Airtrek. Do know why....could smeone enlightened me. This haapens after i installed the 1.38 ecuflash, tried uninstalled and reinstall the 1.29 still having that problem.

 

Did you also remember to copy your XML's from the backup directory to your operating directory?

I am going to take a wild guess at 89970010 really being a 512k rom. It just seems all of the 8000 series ECU's are all 512k. You can try doing the same changes to your XML that I had to do for my GT-A to get the full rom out of the ECU. If so, let the fun begin :-)

 

Hi Mattjin,

Thanks for the advize. XieXie Ni!!!! By the way, had you received my email throught my hotmail??? had it send twice..just wonder ?????? Will try on my other comp once I'm back to Kuala Lumpur...rite now i am thousand miles away and will test on both the boost limits too. Anyway, i think both is usable, and definately the old one is incorrect cos' when you change the value another value of another table changes. Just need to find out which boost maps is used at what conditions

 

Haven't received sorry.