Reviewed By mark w (Staley, NC) Reviewed for a 2011 Audi A4 —11/25/2014 9:55 AM
It was pretty easy to install. I just took my time and did it in the driveway. There was enough assembly to let me feel like I was doing more than plugging something in, but not so much that I had to buy special tools or consult youtube videos. I can hear a difference when I accelerate. The sound is somewhat of a hiss and not a deep growl like we hear when we install one of these on a V8 for instance. I like it though. I notice additional speed and power, but it's not real theatrical. I just look at the speedo and am surprised that it reads 80 already...that kind of thing.