Ok, so my 90' is alive and that is good. However, it is also still running a
bit rough. I wanted to run this idea by everyone and see what you think.

It currently has a very less than stock exhaust. This was something created
by the PO. It is quiet but there is no cat converter and no place to put an
O2 sensor. I'm guessing the lack of an O2 sensor is contributing to my poor
running. (runs fine at start up but starts running rich and loss of engine
power after it warms up. Turn the key off and on to reset the ECU and it
runs fine again for a couple of minutes - this cycle repeats).

Here is my question. I am planning on having someone drill a hole and weld a
nut onto the existing exhaust pipe (where the cat usually is) and then
thread an O2 sensor into the hole. I know that the sensor normally resides
in the cat on a 2.1 but I figured this might work. Can anyone give me an
reasons I just shouldn't bother trying this at all? Eventually I will go
back to a stock exhaust - I just don't have the coin for that at the moment.

Question number two. Is there really a big difference in the O2 sensors that
are ready to plug in and the others that have to be spliced? According to
something I read the the pre-wired sensors are far superior. Your thoughts
please.

Thanks ahead of time.

--
Thanks,

Jeff
90' Carat (It's Blue, It's Beautiful, It's naked inside - IT'S ALIVE!)
86' (We call this one Parts)
85' GL (Sidelined and feeling neglected)