clear my doubts (im a novice to tuning)

by **cams** » Sat Nov 29, 2014 3:51 am

hey friends i have some doubts please clarify. for example take bmw f10 edc17
is it possible to calculate checksum manually by ourselves??? or the remap file we gonna replace will already have the checksum??
if we cant break the encryption desoldering the rom and read the data in it???
I'm totally new to this ecu remapping stuff :)

by **enemigo** » Tue Dec 02, 2014 9:35 am

very good start - f10 edc17 :))))

cams wrote:hey friends i have some doubts please clarify. for example take bmw f10 edc17
is it possible to calculate checksum manually by ourselves??? or the remap file we gonna replace will already have the checksum??
if we cant break the encryption desoldering the rom and read the data in it???
I'm totally new to this ecu remapping stuff :)

by **Harry_90** » Thu Dec 04, 2014 8:54 am

Depends on what software you are using to write the remap file.

I wouldn't attempt this yourself, if you are asking questions like this though..

How much experience do you have with remaps?

by **cams** » Thu Dec 04, 2014 9:54 am

just started learning. Pls help me out

by **MrStache** » Thu Dec 04, 2014 6:07 pm

Usually either the tuning software (like winOLS) or the flasher software (like MPPS) takes care of the checksum.
For winOLS there are downloadable dll files to get more checksum functionality, I would guess there is one for the EDC17 for example.

I wouldnt want to risk calculating a checksum myself. One little error and your ECU is bricked (this might be recovered but is a pain in the .ss)