what turbo should i use?
 

Im doin a relatively low budget turbo setup on my 91 celica with 95 7rib 4afe. My goal is 220 whp and i want a max of 12psi and i only want it to be oil cooled. What turbo would you guys recommend?

T25 or T28.

What brand? If a Garrett arent they water and oil cooled?

All Garrett units of this size are most likely water cooled and oil lubricated/cooled. I am not sure of a turbocharger manufacturer off the top of my head who only produce oil cooled/lubed units. I would start with a search on eBay but if you find a unit that accepts both oil and water. You don't always have to route the water cooling lines. Just add 50/50 water & coolant and loop the lines.

Hello,

I can tell you to take a look to this App for iPhone or Android. It packs a lot of calculators to select components for EFI/Boost/E85 usage, like required injector flow, required pump flow and so.

You should take a look, it works for me, may work for you!