You should put the second bung at the same relitave spot as the sensors in the cast manifold. The computer reads the mixture in two pair of cylinders. The also have to be in the corect order. I think white plug is no 1.....Larry
here it goes loud and clear for ya... taken directly from a b16a1 crx manual... using an obd0 pr3 ecu... notice where the two oxygen sensors are placed? in the same fucking spot! getting readings from the same place.