Power Probs catalytic converter?
 

Greetings,
I have a 91 mazda rx7. Coupla days ago my car engine started racing then lost alot of power.
Starts ok but feels like half power or 1 lobe. wont idle without help.
I have had the spark plug and wires replaced with no improvement.
A couple of people suggested that it might be the cat, clogged i guess?
Any suggestions? Hope its not the apex seals mucho dinero arggg or engine
cgstone2002@yahoo.com