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Doing a quick glance over his set up, he's not using NA rotating internals. He's pushing 9.0:1 (S5 Tii) and making the 186hp with a full exhaust, intake, and tune. Not to mention larger injectors and a bigger pump.
knowing that he's not using NA rotors then he's obviously making up for the power in other locations, IE: Fuel, Timing, Intake Manifold, Porting, Exhaust, etc. He's not going to make that kind of power without a tune or the supporting modifications, so what I said still holds true. You will see little if at all increase in HP and a worse torque curve only swapping the Housings and Irons (leaving the rest stock. That includes: Fuel, Timing, Exhaust, and Intake).
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