Hey Shmiddy,
check out my setup, tuned with Power FC by a legit HKS Tuner in Calgary. I should have expected higher numbers but due to a leaky exhaust manifold, probably would have put in the 320whp range; good enough for the GT28RS aka the SPUD. I'd go with the Power FC! My next setup will be F-Con V Pro by HKS when i upgrade to a bigger turbo. 350-400whp+ application.
http://www.zilvia.net/f/showthread.php?t=161908
Steve.