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douglas james
07-31-2005, 10:57 AM
Good Morning. I have been getting about 10 mpg on an 87 GN I just bought. Just discovered that the previous owner put on an aftermarket single exhaust system without an oxygen sensor. How do I put one on? Thanks Doug

PaCemkr86
07-31-2005, 11:31 AM
the o2 sensor is in the passenger side manifold, not in the downpipe

tommy231
08-01-2005, 07:33 AM
Look for it near the exhaust inlet to the turbo. It has only one wire going to it (if it is still stock).