i jus got an 05 wrx. im trying to figure out what my first step in performance should be and im looking for some useful advice. im gonna start obviously with like intake/ exhaust and all but im trying to figure out exactly what to get first. i have tein htech lowering springs ready to put in when its warm enough outside to doit. but im trying to do some engine work so please anybody with opinions let me know. thanks alot.