Where to put O2 Sensor for Wideband AFR Gauge
After using my ole search button I am finding some differences on where people placed their O2 sensors for their Wideband kits. I know that 240M3SRT6 put his on the header before the first set of cats but I also see Waldig put his on the exhaust downpipe after the cat. The wideband kit says to put it before the cats, but of course it also says at least 18” downstream from the header and that is impossible on our cars! Also, we have two sets of cats so that makes me have even more???? Any input would be most appreciated!!! I am using the brand new Prosport AFR gauges with the heated Bosch O2 sensor. Where should I weld this "bung"???