Magnum Swap, which 02 sensor to use, pre-cat or post-cat

leechris81 said
Only issue would be if the check engine light is on all the time, you won’t know if another code pops up. That may not matter to you though unless drivability was affected, which you would notice regardless.

I'm

dano said
And it goes into limp home mode which takes a lot of the table.

I believe 98 and up will go into limp mode, with a 97 I'm hoping this is not the case...but will surely find out.