I purchased Stillen's header and secondary pipe for my 02 Spec V when the product first came out. The product only came with one 02 sensor hole on the bottom of the header. There is no additional hole on the secondary pipe and the directions do not say what to do with the other sensor other than zip tying it out of the way. The car runs great, but me and the Nissan dealer think it's not running to it's full potential because the other sensor's not plugged in. Would it be a good ideal to tap a hole in the header or secondary pipe for the other sensor? What kind of shop could perform this? Or should I just get a different header?