i just got a itr swap.dunno where its been or whats been done to it. but the ecu i have. i wonder if its jdm so then i wont have to run 2nd stream o2 sensor. are there any identifying marks or numbers that would let me know this or some where i could search it at? cause i dont want a check engine light cause of a stupid 2nd stream o2 sensor when i put the swap in, w/ no cats. lemme know