B21 said:
I had the same issue on my 20i MSport auto with the ZF 8HP box..loads of BMW N20 powered cars listed but not the E89s... :thumbsdown:
will be interested in how it feels to you with the re-map..
There was a bit of a delay as i had few minor problems.
1) I had a problem decrypting the original file so that it could be edited. I went around in circles with this for a good while trying to avoid checksum errors.
2) Then the bad weather hit and my battery went below 12V, so i had to connect the charger and wait for things to improve.
3) Retried the read of the file and decyption, but same problem.
The trouble is that each read of this ECU takes approx 1hr10mins. So that's a lot of waiting around if i have to redo it.
4) Eventually discovered it was an incorrect file on my PC, causing the checksum validation to fail ... :x :x
Anyway, the ECU file is now decrypted, checksum verified and in the process of modification.
Battery is still charging, going to let it go overnight to get to max so that it's 100% for the writing process.
Should be able to apply the remap tomorrow (Tuesday) and then comment on improvement.
However, there are a few things to consider:
1) These ECU's learn over time and adjust accordingly
2) The transmission learns your driving style over time - i had reset the learning a few months ago, so will have to do this again
Then will have to check over time on the overall improvement.
However, it's in hibernation at the moment until the summer so these last two bits may take some time.