1 piece a little bit hard to install n dismantle..this happen to me..1 piece type..have to install from under engine bay..if 2 piece like stock one easier to install n dismantle..can diy some more..I notice that hv 2 types, one piece and 2 pieces with join. Which one better?
u have install emanage right..install which extractor u like..try to dyno & tune..see which one better for u..usually diff engine setup have diff power band..