What to upgrade first?
Boost Controller - $15-150
Exhaust 2.5" recommended
Intake- Home Depot Cold Air Intake along with drop-in K&N or cone shaped with heat shield
Upgraded turbo money permitting
Springs- Ground Controls if you have the money
Illumina 5-ways for the 2nd gen work with a minor modification
Pacesetter Short Throw Shifter
Boost Guage
Exhaust Gas Temperature sensor Guage
Upgraded Fuel system
Upgraded Tires
Upgraded Ignition
FE3 swap for mad amount of power!
This should get you started.