my buddy has a eg hatch with gsr motor. it has a cat on it. i forgot the name of the car. anyways i need a itr header for the motor . i think the motor is obd1 so would i need a jdm itr header. because it has 1 o2 sensor. im not sure how this works.i know my h series and nothing about b series.
im looking into gettin a itr 4 to 1 header with 2.5 collector. any help. the cat might b a "cat co." dont know.