Walker pre bent exhaust

[TugboatTony]

I've just finished doing the exhaust on my '95 SE. I drilled, ez-outted and replaced the typical broken manifold studs and if that wasnt a pain in the a** enough. I replaced the entire exhaust with 'Walker' pre bent pipe only to find out the O2 sensor bung from the factory is the wrong size. I had to grind it off and weld in the proper size. (the parts store had the bung alone). Just wanted to throw this out there if you decide to go this route as well.

 

Anthony

[MY1PATH]

FYI

Pathfinders used 2 different, O2 sizes over the years. the pipes stayed the same except for the older had small bung and newer had big bung.

[Tungsten]

Yes, the bungs were changed to the bigger size in 1994 I think.

[Trogdor636]

That sounds correct, because my 94 has a different O2 sensor part number than my friends 93.

[Tungsten]

No idea why they did it but it must have been one of those "we have to use this one now" things. I don't think the 94-95 ECU takes full advantage of the new O2 sensor.