15g tdo4 vs. t25 or t28 turbo
 

:ugh2: can sosmebody pls tell me the different of this turbo i mean power band , durability and technical,i do have a tdo4 now everyday boosting aat 8 psi and some times at 14 but i was thinking upgrade to t28 from rb26 skyline motor,my buddy upgrade his turbo from s14 w/ rb26 or t25.on top of that i just upgrade my downpipe to stock greddy to 2 3/4 downpipe.pls advise me

the greddy is good for about 275 hp or 435 cfm here is a site with nissan turbo specs http://cherrypicker.tripod.com/id1.html