Ok I'm sure this has been asked before so if someone knows a link please just let me know. My question is I'm starting to feel more comfortable with ecmspy and data logging to get a stable map for my 06 xb9. However, with that I do see the limitations of having to guess what the front cylinder is doing. I've read that you can use WB sensors to give better readings. Can a WB be placed directly into the spot of our current NB sensor? Will the ecm still be able to read the information and make adjustments to the fuel as needed? Also to get the best results where do the sensors need to be placed? I'm debating on getting a set of dinged headers to put the sensors in so that I can keep my current non damaged ones. Is this what you guys would recommend? Thanks in advance for any and all help.