Hey everyone, I bought an A'pexi tt for my 02 sti a little while back and am finally getting around to trying to install it, only bit I'm unsure about, which I've been looking all over the place on the net but cant find answers, is exactly which pins in the ecu to connect to O2 sensor and ground wires, I'm guessing the O2 sensor wire has to connect with the fron O2 sensor? or is the rear? and I can't seem to workout exactly which pin is the grounding one needed for a turbo timer. Any help would be greatly appreciated. I was looking at 2002 - 2004 Subaru Impreza WRX ECU Diagram and NorthUrsalia.com: 2002-2003 WRX ECU Pinouts to try and work it out, those are the only 2 diagrams I've found.