Alright guys, so it started as a pretty strong smell of unburnt fuel and quiet little popping noise coming from exhaust during idle. Only audible when standing close to the exhaust. Now I've got a p0420 light. I'm sure I need to replace the CAT but idk if I should be taking a look at plugs and coils as well. Are these symptoms typical for a burnt out CAT or is it unburnt fuel that destroyed the cat???

 

Also it seems I'm the torque at high rpm's is lacking

 

Cats fail because the car runs rich and hot. A fresh ignition system helps keeping the cat alive a bit longer.
What both clogged cats and worn ignition systems do is kill the engine pretty fast.

 

Well I'm Saving for the part at the moment seeing as it cost 1k. Any suggestions for the meantime? Take it off and knock all the **** out?