Hi,

at the moment i make a chiptuning file for an Audi A4 BFB.

I swaped the maps and so on from a running chiptuningfile. This file come from the ECU 8E0909518AA and I make one for an AQ.
Most is ready, but i found 2 values (16 bit) or 4 (8bit) and dont know what it is. I hope someone can help me.

The first adress from AA ECU is 132F0.

The value here is FFFE (tuning) - serial value F964 (16bit)

in 8 bit it is FE FF and serial 64 F9


The second is in 16 bit 132F2.
value 0087 (tuning) - serial 0089

or in 8 bit 87 00 and 89 00.

May be its a map with 4x1 or so on, but i dont have any idea about it.


I searched in the dump of AQ file, but i dont find that anyway.

My question is, is that an important value? What is it?

Ist only a stage 1 Tuning from 163HP to 195HP.

Thank you for your help.

attach both files

based on your originals:
AA file @ 132F0 you see 64 F9 89 00
should be
AQ file @ 12F9C you see FE 65 8A 00 (in my tune its FE FF 87 00)

but it is not defined and i dont know what it is.
according to this http://nefariousmotorsports.com/forum/index.php?topic=5563.0 by dillinger:

so best of luck