Okay I was reading up on my exhaust system and came across this:
http://dodgedynasty.50megs.com/mods/exhaust.html
It states that if I get rid of or get a high-flow cat it could give the 02 sensor diff. readings.
(My 02 sensor goes before the cat) If I was to 'test' it without a cat and gives no engine codes would that mean I am good to go with a hi-flow/cat-less exhaust system?
1992 Dodge Dynasty 3.0 SOHC. My mods consist of after-cat Flowmaster exhaust, short-ram intake, 8mm plug wires, NGK Iridium Plugs.