What exactly does it feel like when the catalytics get plugged up?

 

Wouldn't know what it FEELS like on a S/C'd vehicle due to back pressure and all. But on a N/A engine that I had with my previous car, my cats were f'd up bad. Felt a little more sluggish at WOT. The main factor in determining this is if you smell unburnt gasoline. If the cats are plugged and you're giving her all ya got, the cats aren't able to syphon out the sulfer smell that a WOT gives off. So if your passengers/girlfriend are complaining about you farting all the time in your truck due to the sulfer smell, when you're actualy innocent of it for once, then I'd be thinking about replacing or inspecting the cats. Hook it up to a diagnostic or emisions control device. That's my 2 pennies worth anywho.