Codes,
Po420 cat system eff below bank1
Po430 cat system eff below bank2
Po174 system to lean bank2...not sure there is an obvious just a problem...any help where I should go with this..
Do I just replace the cat and o2 sensors...I need help not a lot of money...

 

I had a 172, burning rich bank 1 code and tried various part, cam position sensor, vvt valves and the real fix was to replace the PCV valve(so far).
The old solution was to overfill the oil, which only lasted long enough to get it inspected.

Before loading up the parts cannon, with no results try this one. Here is the diaphragm(PCV valve) I used on my model year - you part# may be different but this is what to look for
917147 - $25
Just make sure you don't break the taps holding the diaphragm in place, watch this video
Youtube