In a nutshell, added some timing using the tatrix cable, the car didn't like it (a little knock)so I flashed the stock ROM back to the ECU. It said it was sucessful and then when going back in the ecu to make sure the stock timing table was there the laptop died.
The car initiallly started and immediatly died. Now it just turns over, wont start.
What I have done.
Checked fuses
Reset ECU
disconected battery
Reloaded stock ROM twice
checked immobilizer code (good)

Seems like no fuel, if I floor it and turn the car over I smell no gas.

 

Sounds like the immobilizer may not be right.. Even though you checked it, there's really no reason for it not to work if you sucessfully rewrote it.

Did you back up your original rom? and flash that original rom back?

 

Yes, backed up my original ROM, tried loading it twice, used another VIII flash from another car after loading my immobilizer code in, "nothing" then put my stock ROM back in again.
I can't believe it was only a coincidence and its mechanical but
Everything ran fine until I parked to flash it back to stock. Originally, didn't flash it, just edited the high octane timing table and saved it to the ECU

Thanks for lookin out Let me know if you think of anything that could have went wrong. Fuse, fuel pump, .......i guess I am thinking "non ecu" related at this point.

 

best thing to start is look at all the fuses.. and the ECU harness or anything else that might have been touched while you were working on the car.

Also, try disconnecting the battery for awhile, etc..

 

All fuses good, noticed that fuel pump does not prime when car is turned on. (cant hear it anyway, even with the seat off and a friends ear over it.). What exactly does the immobilizer do to immobilize? May there be a correlation here? I'll attempt to check for voltage to the pump for comfirmation in the morning. towed the car home and its safe in the garadge for now.
BTW, did you know the strut tower bar makes a nice little tow connection? LOL Just glad the guy in the truck towing me has towed lots of cars, and I have been towed lots of times.
We made it 7 miles unscathed.
Thanks M.Jack
Peace

 

Yeah the symptoms your describing definitely sound like a bad immobilizer code.. Odd that it does that if you put the stock rom back on.

The immobilizer code may be hidden in ECUFlash as a more advanced setting, so if you go into options and set user level to advanced or developer, close and re-open the application, the hidden maps will show up.

There is always the possibility something failed at the same moment that the reflash was being worked on. Not sure how statistically possible that is. But I'm inclined to focus more on the ECU if thats the only thing that changed.

Unfortunately if you lost the immobilizer code and key sync (the RFID of the key is synced to the Immobilizer unit, which in turn, recieves the immobilizer code from the ECU and returns if it passes or not)

I have spent about a month trying to aquire a MUT-II or MUT-III device used from a dealer or somewhere for a decent price (I'm willing to pay a fair market value for one) for this reason.. I want to reverse engineer the communication to the Immobilizer module so it can be reprogrammed using the Openport cable. The MUT-III is basically software on a used laptop and hardware, I'd like to get the unit and software without the laptop but Mitsubishi won't sell me one like that.

 

Oh, if you have a remote start and/or turbo timer, that may also give you trouble.. so check or disable those while your diagnosing the issue..

 

Quick question on this thread. Tried search but didnt find all the info I was looking for.

The Immobilizer code, is this something that I need to get prior to pulling the ROM from the ECU?

When is the code required? Does ECUFlash ask for it when you are flashing a new ROM to the ECU?

Prior to pulling the ROM, just set ECUFlash to developer / restart.
Then look at code. Jot down.
Pull ROM.
Make changes.
Flash ROM. ECUflash asks for code.

this is the normal set of events?

I was getting ready to flash my ROM this morning then saw this thread. Being new to ECUflash I wanna make sure I have all the info before throwing my creek paddles away.

 

Nope.. you extract your stock rom, the immobilizer code is contained within that.. You need to see your rom and see the table for the immobilizer..

ECUFlash does NOTHING to hold your hand when it comes to this stuff, therefore its important that you use your original rom to tune from, or know where your Immobilizer code is located, extract it, and put it into a new rom (Keep in mind not every rom is compatible with every car.. 05's wont work on 04's and 03's, and vice versa, and 06's only work with 06's) 03-05 ECU's are physically compatible, they can be swapped, but the ROM is not and has to match the year of the car..

First thing you should do after extracting your rom is to SAVE A UNMODIFIED COPY OF IT SOMEWHERE, and WRITE THE IMMOBILIZER CODE DOWN somewhere..

Most of the people who have a problem assume that the immobilizer code isnt important, or stored somewhere else, and they have a problem with the car starting..

It is **IMPERATIVE** that you save your original unmodified rom somewhere and keep several backups of it, and write the immobilizer code down.. Should you have to replace your ECU, use a new rom, get a bad flash, etc.. Putting the stock rom back on will be the only way to recover and get the car started again.

Without using a MUT tool (the dealer) to read the immobilizer code off the immobilizer control unit, and sync it up with the ECU again is something ONLY the dealer can do, and I'm sure its not something you'd want to explain to the dealer as he takes his big red VOID stamp to your warranty. Might as well smoke a big joint at a police station... LOL

 

Here's the steps to make sure your immobilizer code is correct when you flash:

1.) Open the ECUFlash program and go to the options menu at the top of the screen and select "Options" from the menu.
2.) In the options window click on "User level" in the list on the left hand side of the window.
3.) From the list of choices for "Level of user" choose "Developer".
4.) Close the options window. Close the ECUFlash program.
5.) Re-open ECUFlash and READ your current ROM for your ECU.
6.) After ECUFlash has read your current ROM, in the sections listed on the left of the screen you'll see "Misc".
7.) In the misc section there's an item for "Immobilizer". Select this item and a window will appear showing the immobilizer code that was read from your ECU.
8.) WRITE THIS 4 DIGIT HEX VALUE DOWN AND KEEP IT SOMEWHERE SAFE!
9.) In the future when flashing your ECU either with your own modified ROM OR with someone else's ROM or a tune... whatever... ALWAYS make sure the immobilizer code matches.

The above steps assume your car is currently starting of course and therefor has the correct immobilizer code in place.

ECUFlash will NOT ask you for your Immobilizer code at every flash. It is stored in the ROM, along with the other parameters. It's always a good idea to double check to make sure you have the correct immobilizer code in a ROM before you flash it to your ECU.

Sorry, this doesn't help the op, but I thought I'd put some clear steps to avoid someone else having problems in the future.

NOTE: The steps I wrote above are just for guidelines. I am not responsible if you are not able to start your car after flashing your Ecu and reading the steps I've given above. <- Disclaimer.

 

This is exactly the info I was looking for. Thanks a bunch MalibuJack and RedV.

This information should really be included in the ECUflash beginners tutorial (https://www.evolutionm.net/forums/sh...inner+ecuflash). The tutorial was the first thing I searched for when I knew I would be using ECUFlash..and this is VERY important info for a beginner. Even if the info is in the thread someplace, how many people are going to read through every page? I know I'm guilty.

Thanks again.

 

Boostn, your Immobilizer code is 8F18. I have a copy of your map still. MAKE SURE THE CODE YOU HAVE IN THERE IS CORRECT. I told you yesterday it has to be the immobilizer code. If you flashed it over again twice, it wasnt a bad load of the rom. Maybe your code was messed up, double check it in the flash then write it to ecu.

 

20psi YOU ARE THE BOMB!!!!!
Seems that I was trying to load another evoVIII map named simular to what I named my stock ROM that saved in a different folder. So, because it saved in a folder I wasn't looking in, I picked what I thought was the ROM I had just saved for my car but it wasn't. Anyway, that code worked 20psi, glad you were smart enough to save my ROM when you introduced me to the cable for when I became retarded like yesterday.
I owe you bro!

and thanks M.Jack and the others who helped me try and get my car going again
Peace.

 

and just to think, I almost towed the car to the stealership since it was closer to the car then my house. I had a sick feeling not to because it was the Immobilizer or flash related. Hooray for insight!!!
BTW I smoked a J with a cop once. hehehe J/K, or am I?