i have a 05 r53 with some problems, my cars runningg like absolute **** and i need to fix this asap.
#1 P0445 evaporative emission system purge control valve circuit shorted
how do i fix and where is it located.

#2 P0340 Camshaft position sensor A bank 1 or single sensor
how do i fix and wher is it located

also my o2 sensors are bad i replaced the down-stream and still have to do the up-stream

i really need this stuff fixed so all feadback will be helpfull, pictures are a plus,and vids if any,

when i go to start my car it has a hard time strting over, but when finally started it seems to run fine, the problem i have is it seems like i lost (HP) i do have some mods such as cold air intake cat-back exhaust msd coil hot wires ngk platnum spark plugs.

my buddie thinks it may be my gas cap for the first code. and he also has 370cc injectors from a scion tc will they work? if anyone could help that would be greatly appriciated

thanxs....