TwistedHatch

i have a t3/t04e turbine, it's has a garret housing on it......i want to make a 3 inch downpipe for it, and when i took the old like 2 1/2 d/p off i noticed that the outlet on my turbine is like 2 1/4?? is this right? or do i have a different turbo, i thought it was supposed to be much bigger then that, would a bigger d/p help out?