I can almost gaurantee that the missing o2 sensor is your runability problem. I bet it's also hard to start once the motor is warmed up as well. Once you get the y-pipe installed and install the o2 sensor, your problem will likey be gone. However, you will have a code for "catalyst efficiency" since your cat is missing, and that wont go away until you replace the cat, but I've never seen or heard of runability issues from having no cat, just poor gas mileage

 

Well not having an o2 sensor could be the reason it isn't running right.

 

well no change with that, I'm going to replace the map sensor and see if that helps at all. I'm not getting any codes except coil packs, and they are always random ones, and when I get it to idle I can unplug one coil at a time and notice a difference so I know they are all good to go.