So i changed my plugs and now the car is breaking up. At idle the carfeelslike it wants to stall out When tryin to do a pull the car feels like it wants to fall flat on its face. Changed the plugs twice and ensured gap wasright. Checked the coil packs and each was good. Changed the intake manifold gasketas well as valve cover gasketamd still the car breaks up. Any ideas?

 

Have you checked the vacuum lines? The one for the fuel pressure regulator seems to be prone to blowing off.

 

What plug brand/model and what gap did you use?

 

Found out what it was. Apparently mass airflow sensor was bad