Im thinking of putting an exhaust system on my turbo d16z6 and i was wondering what would be better a resonator or test pipe? what size pipings? and what type of muffler would be best for my setup? im running 7 pounds stock motor and a 2.5in downpipe. I would run open run open downpipe but i heard cmoke comes in the car, i really dont car about how loud it is.