OK so a few days ago i added the sea foam product i heard taht it can cauase o2's to go out. But i did it any way i did it worked well at first. Today i changed the plugs and wires now the car runs extremely rich and it is very lopey at idle has no power and hesitates off the line when i floor it. It might and i mean might run a 15.9. Any ideas or suggestions would be greatly appreciated.
Thanks!!

 

Your wires are either not connected correctly or loose. Check them again.