solid thread to start.....enjoyed the read as im after the same result (300rwkw) and having been slowly adding parts as I can afford them....im not at the stage were I just bought a venom 5" cat from george (venom) and then I just need to call the tuner and book her in But I do feel with the mods I have done I have lost a bit of power? could this be right? I dont know if its cause its not tuned and the pipes are to big or to much flow or somthing