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Hey guys I was wondering what your recommendation would be for welding in a bung for a wideband on a stock 240z exhuast (71 series 1 if it makes a difference). I recently rebuilt and installed a set of Mikuni triples so to help with tuning I'm in need of a wideband which is something I've never used before. I've been researching on the net about placement and I can't seem to find a definitive answer I know it's recommended that the sensor be placed at least 18 inches from the head so I don't overheat my sensor but considering I'm still running the stock manifold and dual down piping do you think if I welded the bung into one of the dual down pipes that it would give me an inaccurate reading even though the down piping is collected at both sides. Any advice would be greatly appreciated!