Yeah, definitely look for an exhaust leak. I looked at your scan....your O2 is reading weird. It's not consistent like I would see with a vacuum leak. It looks more like an exhaust leak pre O2 or just a bad sensor.
If you want, you can disable the o2 and see if the car runs better.
In your VCM editior,
Engine>Fuel>Oxygen Sensors
Change "closed loop enable" to 284.
That will keep it from using the O2 sensor for fueling calculations. Keep in mind that the car isn't made to run permanently like this, it's just for testing.
