I have a Audi A4, front wheel. My exhaust system become obstruct by black carbon very fast ,I am using suprem fuel. What can I do.

Camille Boucher

 

Camille, can you please start a new thread in the A4 section instead of joining this thread. Also if you use the search feature try searching carbon and see what previous post you can read up on.

I have taken this post and started your own in the A4 section.

 

Read through this thread. Let us know how you make out?

https://www.audiforum.ca/general-d-i...tem-build.html