Ask your tuner what he prefers. I had a PFC on my R32 GTR (built 2.6 with -5's and cams) and it's been flawless for 9 years. Im currently running a PFC on my R34 GTR with a 2.8, Vcam and -5's. They are reliable and they work. For your car id definitely go with a PFC or Nistune. Nistune is a great option if you want to run a flex tune, PFC cant do this unfortunately. You also wont need R35 coils as your car wont require that much spark. stick to plug in Splitfires and save some coin. Both my GTR's run a PFC and Splitfire combo at 350kw & 420kw respectively.