why are you worried about it spiking? have you messed with the actuator or wastegate? and the turbo is ok but will just lose some steam on the topend.

 

when u spike its the wastegates fault not the turbo

 

is this a .48/.42 ? i had a .48/.60 on my b16, and at 6-7 psi it semmed to pull up top. but do i think this turbo was big enough? no. i would have liked to had a t3/t4. plus i was using a fmu, and was running lean

 

first time I've heard of this trim T3

 

same here... must be a home made turbo too... free i bet

 

it's probably a t3 from a volvo they have 48 hotside and 52 cold side, I have one in front of me . if it is from a volvo you'll have to make yourself a gasket, as there inlet flange is a little wonky.
B