Why do people use the X pipe? Wouldn't it be better is you had 2 full pipes parallel to each other? Less bends on the pipe = less resistance and since it would be virtually straight you would save on weight also no? I've got in touch with this guy who does exhausts and he told me he would custom a whole system 3" mandrel bent system but I want to weigh in my options power gain/cost/noise level etc. I don't want to go to this guy and sound all stupid. thanks