Originally Posted by Magus2727
^^^ this. The second 02 just does a comparison between the per cat. Its to measure if the cat is working. To my understanding it does not play in any way to fuel mapping or anything else except if the CAT is working. You can get 02 bungs from shops to weld in. The EGR is harder unless you canabolize it off your old system. Its a weird thread type to match up. The bung just gets installed before and after in the welded on straight pipe sections.
cool i knew the shop didn't want to mess with it..thanks for the help guys hopefully I can get this to another shop who can do this for me I don't see anything that should put their business at risk.. with adding the bungs and all hopefully this should work!