Quote Originally Posted by GmbH1 View Post
Thanks for the suggestions and will ask my tech about those things and see if there are any others that should be done as well. Does anybody know if there are any larger turbos available for the C5 RS6 or any other performance parts that I could do while the engine is out?
There are, but not with your auto transmission. Rebuilding your ko4s is the best option.
Depending on the condition of your intercoolers, might wanna rebuild/buy new.