Here is the first upgrade I am planning on doing to my car.

APR Audi A6/Allroad 2.7T & 4.2 - APR ECU Upgrade

Does the stock version of a 2001 Audi a6 2.7T support this? Can the exhaust handle this? Is there any thing I should do to my car first before I pruchase this upgrade for my car? I don't know what to upgrade first, a lot of people say exhaust first, but does this upgrade need an exhaust upgrade first before it can reach its potential or am I fine the way I am?

 

You need to upgrade the diverter valves to handle the extra boost. Get with Emil at Krauto Parts to get a pair - killer product, dead reliable guy, and excellent price, and he's a member here (screenname "emilgevor"). Get them and have them in when you fire up the car with the new tune. Then go enjoy your additional 70hp and 95lbs of torque