[steff_92]

Hello to everyone,

I have Audi A4 B5 1998 which has AFN engine with 81Kw/110hp power. I would like to chiptuning it with 30hp more, and make it 140hp. As I google it, this is the most stable chip for this engine.
At the moment on the car I have ECU with number 038 906 018 S / 0 281 001 721 (don't know which number is the main so i write down two of them) and the car is working perfectly.



I recently bought another ECU with the same number 038 906 018 S / 0 281 001 721 and planned to do the chiptuning on this one. (the first one to keep it like a spare part with original files)



I open it and found the two flash chips which I should replace (1: Bosch 1037356817 HHH721 - 2: Bosch 1037356816 LLL721), and the eeprom for immo because i want to continue using the second ECU (B58253 I/SN)





I can desolder the chips and the eeprom and read them, but there are some questions about the procedure.

1. Which chip should i read, 16 or 17 ?

1. If I send someone the file, he make the tuning, write down on which chip ? (I found that recommended replacement chip is 29F010)

2. Does the replacement chip 29F010 is the same for the 2 current chips ?

3. Does the same tuned file is writing on both chips ?

4. What is the procedure for immo ?

5. Is there someone who would like to make good tuning or already have a file for AFN engine to send it to me ?

Thanks in advance.

[loki954]

For the immo just copy 24c02(b58253) to the new ecu.
for the tune read the two chips an post the files here

[steff_92]

For the immo just copy 24c02(b58253) to the new ecu.
for the tune read the two chips an post the files here

For the immo, you mean to read the eeprom from the current ECU and write on the second one ?
Then it will be the same, and any of ECU will work with the car ?

For tune i will desolder the chips, read them, and upload the files, but can you answer me what model of replacement chip should i order it because currently I don't have any chip.

[loki954]

29f010 will do