My tt has 104k miles and runs well. I have no error codes. I am going to add downpipes and was wondering if it is a good idea to change the O2 sensors at that time.
I am also replacing the downpipe-to-turbo gasket. Should I replace all the exhaust hardware?
David
Follow Ups
installing downpipes, change O2 sensors at 100k miles? - David G00:10:03 10/28/08