Will not start

If the car sat for a long period of time with out being started the pistons will contract(shrink) alittle. By cranking it continuously with the gas pedal down you help bring back the lost compression. There is something similar to this stated in the owners manual under hard starting. I have seen many cars towed into the shop for just this reason. I doubt very much its your cat. You would have noticed a loss of performance. If your sure it's getting fuel and spark try this. If no fuel check main relay the solder joints in the relay have a way of cracking causing loss of current flow. If not hay my car still runs.

later Chris