Can anyone tell me the difference in when these different trims of turbos will spool, and if they will be able to produce torque all the way till redline on a stock b18b?I know that the higher of a/r in the turbine makes more torque at higher rpms, but how does the "trim" affect it?
1) T3/TO4E with 50 trim and .48 or .63 a/r
2)T3/TO4E with 57 trim and .63 a/r
3)T3/T04E with 60 trim and .63 a/r
4)T3/60-1 with .48 or .63 a/r

Also, what precision turbo is most comparable to the T3/T04E?

 

very much like exhaust ar generally the higher the trim the slower the spool and higher the hp/tq, but this can very depending on application. For you even a 50 trim .63 ar will suffice.

 

do you have any idea where a 50 trim .63 a/r will spool?

 

Can very widely, but what is your exact set-up. It comes down to a lot of things like exhaust size, manifold style, intercooler size, etc.

 

right now it is stock, but Im trying to get some information for a custom setup. Probably will be running a log manifold and maybe a pwr 20x8x3 intercooler. Im havent decided on fuel management, but if I can afford it, it will be hondata. either 2.5'' or 3'' downpipe on stock compression ratio.