I just installed my new turbo kit and flashed the tune over, however I did not write down my immobilizer code, so now the car will not start. I still have ecu flash open from when I did it. Is there a way to undo the rom change, or find my immobilizer. Again, I have not closed out the program since I did this.

If theres a way to unhook the immobilizer, thats fine as well, anything to get my car started.

 

I was reading over in the EcuFlash forum that there is an alternate ROM that 05 MR's are using with Tephra's v5. One of the things that I noted was that they had to remove the immobilizer code because of space constraints. Might get you running again.

 

more info please!!

 

there is no way to undo the ECU ones you have flashed it with the new tune!

 

ok, so how can i fix this?

 

you don't have the original rom saved

 

Pretty much only option is to disable the immobilizer. Search the ecuflash forum on how to do this, I have it done on my 05, and have posted in the thread discussing it. If you cannot find it, PM me, I will help you.

 

What he said. I had to do it on an evo9 ecu into an evo8 car. They just wouldn't jive, oh well, immob delete FTW!

 

do you have any previous tunes saved on your computer for your car?