o2 sensor

what is the differance between one wire o2 sensore and two wire o2 sensore ?
and the one wire come with which engines and the two wires come with which engines ?
and if my engine come with one wire can i convert it to two wire ?
and what is the best factory o2 sensor can i install ?

I've neer seen a Honda 2-wire O2 sensor before, do you mean 4-wire?

mine is one wire. what about the d16z6 and b16a ?

the d16z6 and the b16a are 4-wire O2 sensors. Most Hondas/Acuras come with a 4-wire O2 sensor. The jdm d15b (that you have), most usdm '92-'95 CX (mine came with a 4-wire), and I believe some '88-'91 Civics come with a 1-wire O2 sensor. There shouldn't be any reason to convert to a 4-wire O2 since your ECU only looks for that 1 wire. But Honda OE O2 sensors are going to more expensive than just buying one from another company (Denso, Bosch, etc).

what i need to say is : now i use the fuel managment for my turbo is fmu with missing link. i dont install my o2 sensor in the downpipe yet. now i will install safc2 so i have to install o2 sensor. my question is if i install the 4 wire o2 sensor in my d15b vtec jdm with my turbo system and with the safc2 will that give more power ?