Post by
brianw »
https://forums.nicoclub.com/brianw-u65970.html
Wed Jun 13, 2007 7:45 am
I think it's the same-- I don't have the `00-`01 FSM here to check.
Unscrew O2 sensors.Remove stock y-pipe.Ensure all gaskets are removed. (round crush gaskets in front, copper gasket to cat)
Ensure o2 sensor bungs on new y-pipe have antiseize installed (they should already, all the WSP's used to, at least years ago).Ensure new crush gaskets are installed. (I generally reuse the gasket to the cat, since the stock Nissan one is a nice copper piece).Reinstall y-pipe.Reinstall o2 sensors.
You'll probably have an easier time if you remove the heatshield on the cat (four 10mm bolts) to access the y-pipe-to-cat nuts, and the stock y-pipe probably has 2 bolts holding it on in the middle, too-- your aftermarket y-pipe is lighter and won't need those/won't even have a mount for those.
beancooker's link looks right, your Fed-spec car might just be short an o2 sensor or two.
After doing a dozen or so of these I think I have the installation time down to about 45 minutes or an hour, and that's mostly just because I'm cursing at dropping the socket and elbow joint I need to tighten the bolts on the y-pipe! :p