the maf housing is stock...it goes from the inlet of the turbo right near the radiator support and the filter right is off the maf housing...ill try to upload pics of the set up.
my tuner has all the info about the tune...i dont know much abou tuning ive just been watching him tune it..
i know when he first tried to tune it he didnt have the correct ROM for it since its not wrx or a sti and alot of the options arnt avalible for him to access in his lap top..
im pretty sure the injectors were rescaled
ill try to get the fuel trims tommorrow