2003 audi a4, 1.8 turbo
 

I bought a manual boost controller for my audi. What are the steps I need to take to installing the boost controller and the T that came with the controller? Or if someone has a video of exactly how to do it step by step that would be great too?

How come you want to use a MBC to control boost?
These cars are not designed to run higher boost unless the ECU is tuned/remapped, and boost is controlled by the N75 valve (electronically).