Since Putting Reconnecting the o2 Sensor back my GTP is Running More Richer then it was without the sensor.

Its Sluggish
Feels a huge loss in power
and it Hesitates to Accelerate (sometimes)
Sometimes it feels like its bogging down and its Rattling


is my o2 Sensor complete **** with these new headers
Or did i forget to do something?


I Tried Resetting the Computer problem Still going on

and i got a check engine light code Tonight (will find out what that is tommorow)


Ideas? Solutions?