I Just bought a '01 A6 2.7T tip and I got some questions since I'm coming from a 1.8T backround. When I bought the car the previous owner had plugged of the diverter valves, what for? I know that the universally best first mod is a chip, but where should I go other than that besides a bipipe? I have about a thousand to throw around right away from when I sold my truck, so I'm just trying to figure out the best route to go with that budget. Any input is appreciated!

 

Great place to start is here: https://www.audiforums.com/m_468139/tm.htm