STI mods :
Huge Perrin front mount intercooler
Perrin intake system
Unknown brand stainless steel headers
No cats
TurboXs RFL turboback
Boost controller turned up to unknown boost pressure
SRT-4 mods :
K&N intake
Borla exhaust
Atp downpipe no cat
Mpx pulley
Boost controller set at 15psi
Weight reduction
Both videos are from a roll, 30-35mph.
http://www.modernperformance.com/cory/MOV03756.MPG
http://www.modernperformance.com/cory/MOV03757.MPG