I plan on building a 450-500hp fd and am centering it around the xs engineering t04s.. What else would i need to run this?? So far ive got intercooler, radiator, upgrade fuel sys, upgraded ignition, and a PFC.. This would be included with the other mods of cat-back prob midpipe and racing pulleys. I might also end up getting a street port with 2mm or 3mm carbon apex seals, but this isnt required is it??

 

You are going to have a hard time making those #s on pump gas with that turbo and no porting.

Carbon apex seals are not ment for turbo motors. They break very easily under detonation. Also they don't last very long. Great for high RPM NA race motors though.
-Dom

 

Don't go with carbon seals, you can keep the stockers, go with hurley or ceramics. You should be able to hit about 450rwhp with that turbo with enough boost, might need to port the engine to go any higher. As long as you have the fuel you are alright, I suggest the haltech for ecu. It has more options to tweak with and datalogging.