FMIC+POD= defect in vic and possibly other states, FMIC is un-nessesary for R34's for 200rwkw. Just get an apex'i panel. great quality.
Full exhaust with high-flow cat is a must
Boost control, Jaycar IEBC is good value for money. or if you can afford it, blitz ID3 is known to be good.
BOV is a waste of money, causes issues with AFM cars, and doesnt improve performance, when your stock once starts to leak, get one GTR unit.
if on a budget again use a jaycar DFA, if you have money get an E-Manage Ultimate(EMU). If you go the DFA route, look for an Apex'i SITC second hand if you can, my theory is when going past a DFA(getting an SITC, i would just get an EMU)
So costs here are:
Apex'i filter: $80
Full exhaust: HKS catback from justjap for $800, GKTECH or Justjap front/dumps, ~$200 Highflow cat: PM BATMBL, think they are ~300 So max $1350 for a full exhaust
Jaycar kits: IEBC $70, DFA 70, i think the hand controller was ~$50 Apex'i SITC ~250
Tune shouldn't be over 300?
So the grand total Shouldnt be over $2200 if you get an SITC and allow 300 for the tune. OR under 2800 with an EMU
Cheers,
-Ryan