I have a 89 tracker with a 1.6L 8 valve with efi. I put a header on it and know I'm having trouble with the O2 not heating up. Its running lean and that scares me. Anybody installed a heated O2 in a vehicle that didnt come with one? Mine ofcourse only has one wire. If so which one or manufacture would be the best to use? Part#'s? Ive done the search but cant find exactly what I need.:confused: