You might be able to change this on the TCU side instead, see attached for what I believe needs changed to match what the S6 ECU is sending.

Edit: ShrVar_xEngTyp_C is 0x20 in the Euro RS6 4G0927158BD 1006 SW

Okay I now have all the stuff to complete my ZF swap other than the coding. There has been some very helpful info from Project LS and Artemisia

At this point I am battling with the concept of powerclass as I am using a ZF8HP55 from an Audi A6 NNT transmission code.

I know that the powerclass will mismatch so I am deciding whether it is better to adjust this on the ECU side? (original S6 ECU)

or change these values on the TCU side to match the S6 ECU?

For immo I will be using ODIS. I know it is hit or miss but my friend who is also doing this swapped managed to accomplish immo adaptation with ODIS fine. It seems what is holding him up is the powerclass mismatch.


It seems it may be easier to change the ECU Powerclass to match the transmission, but is there any thing else I need to worry about with this? I know most people use RS7/RS6 transmission for this swap, but I have found that RS7 and S8 all come with 8hp55 as well, except with different trans code like NWK for example vs the a6 NNT. Based on this, I dont see any reason why the 8hp55 from the A6/A7 should not be compatible with this engine, but I will have to see.