Ok I got a guy with a garrett ball bearing turbo. Says the in take is .80 and exhaust is .72. Will this make 20psi on my ka? I have a built ka with 264/264 cams 9:1com. .20 over.

Come on guys ik some one on here knows.

Alright , that is totally Not enough info to give you even a guess. Obviously (or is it?) that is the compressor housing and turbine housings a/r ratios. Without any indication of the size of the actual compressor and turbine wheels in millimeters or maybe a name or the part number on the center housing , no one will be able to help you. Sorry.

EasyE was running well over 20 with a gt2860, iirc it had a .86ar hot side and a .60 on the hotside. It would hit 28 psi at max and dwindle down to 19 or so by 6k rpm. Anything close to the 2860 is a really good turbo to have.