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It should be a big jump, are you getting it on the dyno at 14psi?
What rear housing do you have on this by the way?
Also heads up to everybody, Apparently the Master Power T70 (made in Brazil, I think what the OP has) is a pretty good turbo, but a lot of the other brands are pretty shitty and unreliable.
Anyone feel free to correct me if I'm wrong
Were did u get tge kit from?