20g is a Mitsubishi turbo from the older eclipses and Evo's. Great turbo, but with sport ball bearings it would be more improved. I would call Hahn direct and speak with a tech, but first gather the info on what your engine's full specs are. You need to have the right turbo for the right internals, otherwise your just defeating the purpose. I would personally gather size of your valves (intake/exhaust), bore and stroke for piston, compression ratio, size of intake runners, intake plenum size, fuel psi, camshaft lobe/lift, valve spring compression, and of most importance volumetric efficiency flow chart. Those you need in consideration for the size of your compressor and turbine wheels, the correct amount of psi running through the turbo, correct exhaust size, and an equal length turbo manifold.
2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
Last edited by 5t3alth; 05-05-2013 at 06:25 AM.