AVO Stage 2 vs Stage 3 Kit

[Victini]

Hey guys, I was going to get a Stage 3 AVO turbo kit for my 86 but ran into some confusion. I have been trying to figure out the difference between stage 2 and stage 3 turbo's and I am under the impression it's just a billet turbo that is rated for better flow? Can someone please confirm this for me. Also I am thinking of running low boost numbers as I am running on a stock engine. Would it be possible to tune it for flex fuel with boost varying from 8psi up to 13psi (using a GFB electronic boost controller)?

Also a very big confusion is what the car would feel like (in terms of spool time and where power comes on) in comparison to a stage 1 or 2 avo turbo. I only have this confusion as the kits have the same turbo but stage 3 is "billet". I am aiming at getting increased power but still have boost coming on as early as the other kit's turbos.

[tyler_win_photo]

You're right "stage 3" is just an upgraded billet compressor wheel.

Throughout the years, the different stages of the AVO kit have changed. Last I heard, the stage 1 has a 5-7 psi spring. The stage 2 comes with an 8psi spring and a catch can.

With an electronic boost controller you can run double the pressure of the spring in boost. So a 8 psi spring can run up to 16 psi of boost.