ok i just swaped my motor no its not a b series, i just just got a replacement d16y8 with 11k miles on it, hey it was only $300 and mine threw a rod, any way theres this little plug looks like the o2 plugs but it not long at all wont get to far from the tb its like 4-5 inches, i cant find where it goes and im getting a check engine i know its this plug and i dont know how to get trouble codes from obd2