ok so here is the deal..i have 2 turbos at my house. one is a master power .50 trim and here are the specs.
T3/T4 Master Power Turbo 300-350hp .63 A/R Stage 2
-Journal Bearing Cartridge
-Oil cooled only
Compressor
-50 Trim Inducer Wheel
.42 A/R w/ 3"(75.9mm) inlet and 2"(53.5mm) outlet
Turbine
-60 Trim Exducer Wheel Stage 2
-.63 A/R TURBINE HOUSING w/ T3 Inlet 4-Bolt-M8 2.5" oulet

and the second one is a SPA .61 trim. here are the specs...Suggested application: 1.6L - 2.5L engines
Turbine Housing: free float
Single:A/R .36, A/R .48, A/R .63 / T3 flange with a 4-bolt downpipe flange
Divided: A/R .48, A/R .58 / T3 flange with a 4-bolt downpipe flange
Compressor Housing: A/R .42 – please see technical drawing
Notes: good up to 380 HP
Average weight: 6.6 Kg / 14.55 lbs
Compressor TRIM: 61
Turbine TRIM: 70

my goal is to hit 400-430 WHP. it a stock b16 with a gsr head. the head has skunk2 valvetrain and ctr cams. im going to run e 85. i used the master power last summer on a bone stock gsr and made 290WHP on 9psi.

the spa is a .61 trim but what confuses me is that the intake side is much smaller than the masterpower. why is that?? is it because the SPA might be a hybrid??

which turbo is better for 400WHP?

 

Anyone??

 

I would personally not use either. If you want to make 400whp without breaking the bank, I would get the Precision 6076 .82ar T3.. Those are $599.99

 

id say go with the precision 5857 .63 a/r. It is really efficient and the turbo I am looking to go with. my power goal is around 400whp also

 

I don't have the cash to buy another turbo...these two are what I got at home. But thanks.I hope someone can tell me which one of these would be better..

 

bump