Ok so im running a first gen b16 in my 91 civic, with a pw0 ecu, although its going turbo in a couple weeks so i will be running a p28 ecu. i can tell that the fuel is running to lein, im sure its the 02, i dont know if its bad or that i need two. i know there is a place in the ecu to hook up two, however i only have one hooked up? let me know if i need 2 or just a new one, and where do i look for a new one, and what do i ask for a crx 02 or obd1 b16 02?