what kind of mods do i need to do to my car if i wanna run this single turbo setup to produce 400+whp with pump gas? do i really need to buya new ecu like haltech to run this kind of power or can i just reprogram my stock ecu? please help.

 

If you want to do it right you'll need a standalone engine management system. The PFC seems to be a popular option although you'll be limited to 1200cc secondary injectors. Nice thing is you can just plug it straight into the existing wiring harness. I use a Haltech E6K and am extremely pleased with the driveability and control provided by the system. The install and wiring is considerably more involved than with the PFC but the rewards are well worth the investment. Don't take chances with your engine, upgrade your fuel system!