I'm 18 years old and purchased the 2006 audi a4 2.0t after saving up money for the past three years. I've had it for almost a year now and I'm at the point where I want more hp. I don't know anybody who knows a thing about cars so any suggestions of things to get to increase hp?

 

There are some stickies you can read. I think the number one thing is to chip the car to boast HP. After that you can start doing all types of things with money being the deciding factor. Check out APR for chip information. There may be others as well APR just happens to come to mind.