What kind of Turbo Do I Have?

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ok well i got my ecu fuel pump and boost controller in, i haven't installed the mbc yet. the wastegate spring thats in it is a 7-8psi spring. full boost comes on around 4 - 4.5k. is that bad? perhaps i should install the mbc now. also, the mbc will keep the wastegate actuator shut completely, causing the turbo to spool faster and then when i hit the correct psi, the mbc will pass the pressure to the wastegate allowing it to bypass, instead of creeping open slowly and then being bypassed all the way at the proper psi. This in turn SHOULD lower my spool to around 3.5 -4k?
 
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ok here's the size of the turbine and compressor:
t3 stg 2 .48 a/r turbine Exducer diameter: 2.122", major diameter: 2.559"

t04B super v trim compressor inducer diameter: 2.180", major diameter: 3.00", housing inlet size: 2.750"

And here is the compressor map for the turbo:

compressormap.png
 
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