1995 3.4l V6 A4
 

what are some good mods that i can do to a 3.4L to get some extra horsepower

Basic mods would be a cat-back exhaust, CAI, and headers.

You could go even farther with ported heads and intake, maybe bigger throttle body.

Gears help a bit as well, but really opeinign up the exhaust is great!