Somebody fill me in on the catcher tell me exactly what it does. I have a comp and ddII's so will it work with it. I am alittle confused about it. How much horse will it give my 99 and is it going to smoke more or what. I hear everyone talk about instant throttle response is there any other good things about it. Tell me how much it will cost me also. Do i send my stock ecm out or what. Thanks