Are there any differences in MSS54HP ECUs throughout the production years?

[bmw m3 s50]

As the title says, are there any differences in MSS54HP ECUs throughout the production years? Did the ZCP equipped m3’s have any differences with the MSS54HP?

I am going to be running a CSL airbox in my 2001 m3 and wanted to upgrade to the MSS54HP but want to be sure I am not missing anything prior to picking one up.

[karter16]

https://nam3forum.com/forums/forum/special-interests/coding-tuning/2052-comprehensive-mss54-mss54hp-dme-information

[bmw m3 s50]

https://nam3forum.com/forums/forum/s...me-information

Thanks, I did read that thread before posting but all I got was that 2003.5 and up had MSS54HP and prior to that there were MSS54. I don’t think it covered if there were any differences throughout the years from 2003.5 to 2006.

Did I miss a post in the thread talking about this?

[PetrolM3]

To my knowledge, there is only one version of the HP.

[karter16]

Thanks, I did read that thread before posting but all I got was that 2003.5 and up had MSS54HP and prior to that there were MSS54. I don’t think it covered if there were any differences throughout the years from 2003.5 to 2006.

Did I miss a post in the thread talking about this?

The first two tables list all the known firmware variants for both the MSS54 and the MSS54HP, the third table lists the release dates (many of which are in the date range 2003.5 thru 2006) of each of these variants and the hardware and markets they applied to.