Hallo, I've got a audi S3 8v fl from 2019 with the OPF... I already did a res delete. I'm very happy with the results but you always want more I asked my dealer that I would lose my warranty if I go for a downpipe and the answer is yes... because they need to changes things in the software because of the error message. Now is the question what the difference will be if a would do a muffler delete?
ps: sorry for my English
Video of my res delete :
ps: sorry for my English
Video of my res delete :