My question is about tuning? I've gotten a quote for $1300-1500 for a remap. Is this because you can't do live tuning on the stock ECU or something? It seems pretty expensive, and for that price i could nearly get an aftermarket ecu and have that tuned couldn't i?
For that price get a POWER FC its better in the long run you can retune whenever you like and most competent tuners can tune it easily within precise variables for your car...
DONT YOU DARE SPEND 1300-1500 on a remap THAT WOULD BE A BIG MISTAKE get the standalone it will prove its weight in gold.
Also if you cant find a GTST power Fc you can use a GTR power Fc from a R32orR33 as long as it is D-jetro so you can bypass the maf and run it from a map sensor.
I am using one on my GTS4...