Ok, after reading a lot, I think I will run stock M-box to begin. but later I will try to make my own stage1.
I have downloaded the DD M-box file for Bosch maf, and the XDF
what i'm planning to do is:
1-Disable Secondary Air Injection Diagnosis and save the.bin
2-Correct the checksum with ME7Sum and use me7check to confirm twice.
3-Flash in bootmode the file.
4-recoding the cluster to 1025. do I need to do this ?
-there is the only thing I need to disable and im ready to run the stock Mbox ? I will go read about ESP dtc removal... I'm not sure where starting