I have a 99 impreza wagon and was wondering what turbo i could use on it, WRX or sti???

 

if so what year and which is better to use?

 

also could i use an cat back from any different year/models

It is not as simple as bolting on a turbo. Motors with turbos were engineered from the drawing board to be turbos, so many internal parts are extra heavy duty to take the extra stress of high pressures.

 

To have a turbo, you need to install a turbo. See if you can find one at a wrecking yard at a good price.

From what I understand, an EJ22 has an open deck and an EJ22T has a closed deck. The walls around the cylinders are much thicker on the 22T to handle the extra compression. You can put a turbo on a regular EJ22, but if you boost it too much you are going to go through head gaskets pretty quickly or worse. Also, the turbo has a completely different ECU, so you would have to swap a lot of wiring to make it work. Seems like a lot of work for just a few psi to me. Now if you find an EJ22T in good condition with the ECU etc and don't mind doing the whole swap, you should be good to go.

go to nasioc.com

After you go to NASIOC, find this forum:

http://forums.nasioc.com/forums/forumdisplay.php?f=50

 

And then read this:

http://forums.nasioc.com/forums/showthread.php?t=185230