ok i have a 1500 avalanche the 5.3. i want to put a cold air intake on it from k&n and a cat back dual exhaust from flow masters. how much more power would i get, would i save gas, better pick up and is that a good match? should i go cat back or take off the cat? im in louisiana and dont know the law. i want a nice roar from pipes though.
sorry its a v8 5.3L
sorry its a v8 5.3L