Best turbo for D series 250 - 280whp with quick spool?
 

what turbo would be the best choice for 250 to 280whp with quick spool still?

not looking for extreme top end just something fun for daily driving...

from the turbos below could someone explain the performance per each for me

Bullseye t3/t4e 57 trim .55 a/r
max power:
Spool @ rpm:

Bullseye t3/t4e 50 trim .55 a/r
max power:
Spool @ rpm:

Garrett t3/t4 50 trim .63 a/r..........
max power:
Spool @ rpm:

Garrett t3/t4 57trim .63 a/r..........
max power:
Spool @ rpm:

Garrett t3 super 60 .48 a/r..........
max power:
Spool @ rpm:

I think you're gonna cry if you get any of the t3/t4's. I had a 57 trim on my D16Z6 and lemme tell you, first gear was a joke, full boost RIGHT before I had to shift. The rest weren't TOO bad but it was definitely more of a "freeway puller" as opposed to any quick spoolin' daily drivin' fun. I'm in the process of building a B18B1 'Teg and with all of the compressor map math and plotting we decided the T3 Super 60 would be about the largest turbo to still spool up pretty quick and yield 300ish ponies. And THAT'S with 1834+ CC's to power it, If I were making a D-series turbo again for that amount of power I'd probably go with either a T3 50 trim or super 60, but I'm pretty sure you're still gonna sacrifice at least a LITTLE in the boost threshold/boost lag department.

The differences between the t3 super 60 and t3 50 trim are only in the compressor wheel from the looks of it.. the rest is identical..

what effect would a 60 trim compressor wheel have vs a 50 trim compressor wheel in terms of spool up? would the 60 trim spool 500 rpms or so later?

so my questions is what does the trim of the compressor fundamentally do?

compressor trim refers to the ratio of inner/outer wheel size. the larger the trim numbers the bigger the compressor wheel. the bigger the wheel the more cfm the turbo can flow. the more cfm the more power.

does this mean more turbo lag?

would a 60compressor wheel trim be alot more laggy compared to a 50 trim compressor wheel?

the trim on a compressor will determine how much airflow the turbo will flow. that airflow will determine how much hp can be made. a 60 trim compared to a 50 trim will flow more air. the ar stamped on the exhaust housing will determine how large the exhaust housing is. the larger the exhaust housing the more lag but the more power. the smaller the exhaust housing the less lag but less power.

none of those turbos are right for what you want. the greddy kit comes with a TD04 15G thats what i have

This is what I'm piecing together right now, but this setup won't get him much above 220whp. Those turbo's will max out around there.

yeah thats true. so i guess quick spool and 280whp is like an oxy moron lol maybe a 14b would be somewhere closer