BMW E46 M3 Speed Limiter

Clutch · Post by **Clutch** » Wed Feb 17, 2010 12:40 pm

Hello, i'm new to this forum and i'm sorry if i'm posting in the wrong section this topic.
I'm bought a 2003 BMW M3 and i want to remove the speed limiter, normally i do all the car stuff by my self, i like to learn and do by my own.
Can somebody give me a clue what i need to do this.

Thanks in advance.

ecuconnection · Post by **ecuconnection** » Wed Feb 17, 2010 1:16 pm

could be 250kph though I'm not 100%

Clutch · Post by **Clutch** » Wed Feb 17, 2010 1:22 pm

ecuconnection wrote:I didn't know there was a speed limiter on this car? I thought you were limited by the rpm only in top gear. could be 250kph though I'm not 100%

Yes this car have a speed limiter to 250kph

Clutch · Post by **Clutch** » Wed Feb 17, 2010 11:39 pm

I have been searching and i think i start to understand how to do, the only thing i don't understand is where i can find the xdf file or see the location of the speed limiter setings.

Let me know if i'm correct:

First i download from the ecu the original data with galleto.
After i will open with tunerpro.
Change the value of the speed limiter (after i have the xdf file or creating a xdf with the location of the speed limiter setings).
Save the file with the modifications i have made.
Upload to the ECU the new file with galleto.

Am i in the right way?

Sorry my newbie questions but i have to start by some how.

Regards

Clutch · Post by **Clutch** » Thu Feb 18, 2010 2:34 am

Does this modification i want to do change the checksum value?

ecuconnection · Post by **ecuconnection** » Thu Feb 18, 2010 5:45 am

Clutch wrote:Does this modification i want to do change the checksum value?

You will need to update the checksumm befor you upload the moded file or your ECU will lock up