guys, please help me with precision turbo, which one?

[lowridin2g]

alright lets start this off by saying that im obviously upgrading my turbo. now, i want a turbo thats gonna make a ton of top end power on pump gas, but i also want it to hit full boost before 4,000 rpm's, 4,000 rpm's at the latest. i've limited my decisions to 3 turbo's. keep in mind i will be tuning with safc and datalogger, 255 lph pump, 650 cc's and an aeromotive afpr. rest of mods are in my profile.

#1 precision t&e scm5031e
Part Number: SCM5031E
Max Rated HP: 450
Inlet/Outlet Size: 3"/2"
Bearing System: 360 Race
A/R Ratio: .63
Garrett Compressor Wheel Trim: 50
Garrett Turbine Wheel Trim: 76

Garrett Compressor Wheel Specs:
Wheel Trim: 50
Wheel Diameter: 54mm
Wheel Inducer: 2.123"
Wheel Exducer: 3.000"

Garrett Turbine Wheel Specs:
Wheel Trim: 76
Wheel Style: T31
Wheel Inducer: 2.559"
Wheel Exducer: 2.229"

turbo #2
Part Number: SCM3227E
Max Rated HP: 480
Inlet/Outlet Size: 3"/2"
Bearing System: 360 Race
A/R Ratio: .63
Garrett Compressor Wheel Trim: 54
Garrett Turbine Wheel Trim: 69

Garrett Compressor Wheel Specs:
Wheel Trim: 54
Wheel Diameter: 55mm
Wheel Inducer: 2.170"
Wheel Exducer: 2.950"

Garrett Turbine Wheel Specs:
Wheel Trim: 69
Wheel Style: T31
Wheel Inducer: 2.559"
Wheel Exducer: 2.121"

or turbo #3
Part Number: SCM3227E
Max Rated HP: 480
Inlet/Outlet Size: 3"/2"
Bearing System: 360 Race
A/R Ratio: .63
Garrett Compressor Wheel Trim: 54
Garrett Turbine Wheel Trim: 76

Garrett Compressor Wheel Specs:
Wheel Trim: 54
Wheel Diameter: 55mm
Wheel Inducer: 2.170"
Wheel Exducer: 2.950"

Garrett Turbine Wheel Specs:
Wheel Trim: 76
Wheel Style: T31
Wheel Inducer: 2.559"
Wheel Exducer: 2.229"

im really undecided. im guessing the 54 trims gonna spool up slower, make a lil more top end. but will it be as potent as the 50 trim on pump gas. and will i be able to tune it with a logger and safc2? please give me all your input and opinions guys. thanks

 

[tsi20gawd]

Well Im sure you have heard everybody call the 50trim the "pump gas king" a few times by now. right now(I play musical turbos Im running a PTE 50trim. It seems to be a pretty potent turbo all around drivability boost responce etc. It is a little lagging in the HIGH boost areas compared to other turbos ive had and for that reason im going to sell it soon but it really does depent on YOUR goals.
I probably would use the 50trim over the 54trim. The 50trim is a newer design and seems to be more efficiant than most other turbos on PUMP gas.
You are not going to make a bad choice here maybe you should checki out AGP's RS52. Its a 60trim 2.29 inducer 2.950 exducer and seems to be a good choice just be weary of compressor surge with 60trim.
gook luck.