Okay I've had my 06 STI for about 5 months, so I'm still a little new to the platform, so excuse me for my lack of knowledge. My STI is basically full bolt ons with stock turbo, pushing about 23 lbs of boost.
My friend has a brand new turbo that he will sell to me for dirt cheap if I want it. It's a cheap turbo but it's still an upgrade, it is an On3 Performance 70mm.
Also it has a T4 flange and I haven't been able to find what flange the sti has. Also I hear that STI's run coolant through the turbo and this turbo does not.
I'm just looking for some honest opinions on whether or not its a good idea, or if it would even work.