i have a fifth gen. civic. 95 its the ex with d16z6 and out of curiosity i was wondering were the O2 sensor goes cuz i have DC headers and i replased the whole exhaust with a brand that i forgot. is it mounted on the cat or maybe before cuz i researched a little and its says fifth gen only have one... is it right??? would appreciate any advice thanks.

 

From the factory, EG civic's have the O2 mounted on the upper portion of the exhaust manifold. However, most aftermarket headers for them usually relocate the O2 sensor to just before the collector near the end of the header.

 

Agreed.

 

i found it. it was hidin near the cat. thanks for the help though.