the 60-1 is a high-flow low boost compressor. The T3 you speak of is just a turbine side. which is DUMB to place a T3 turbine on such a high flowing compressor.

60-1's max efficiency is 72 percent and it only extends up to the 15psi pressure range. up to 20psi it drops to 68 percent. 25psi its down to 65 percent. 30psi its down to 60 percent.

compare this to a T58 compressor or a T61, the efficiency islands extend all the way up to 28-33psi boost for max efficiency.

You really need to know how to read compressor maps to understand what i'm saying. 60-1 is a compressor designed to be run on a low boost V8. Let me say that sure a 60-1 may work and make some HP, but its not the ideal compressor for a B series honda at high boost and 9,000rpm. If you put a T58(TS04) or a 60trim or maybe a T61(HUGE) then you will have less heat at the same boost which will offer higher hp potential.


the turbo i'm running is a 50 trim compressor with a O trim T4 turbine. What people need to understand is that the exhaust side has to breathe/flow as much as the compressor can push through the motor. which is why these T3/T4's are so popular because they pair a T04E high efficiency compressor with a small T3 turbine for quick spool and mid HP numbers. These turbos are limited to a certain HP range as well because of the turbine side. If you put a T4 turbine wheel on a 60-1 holy shit the flow capacity(airflow=HP) of that compressor will give some major hp. but not on a 4 cylinder.

i chose the 50 trim for these reasons:
15-20psi operational range
max 78% efficiency at that boost level for my airflow