speedART BTR-II 650 EVO
cars | porsche | speedart | tuner | March 3, 2010
Larger turbos and intercoolers along with ECU tweaks send the Porsche 997 over the edge with speedART’s BTR-II 650 EVO; it goes 0-62 in 3.2s thanks to 641 hp/479 lb-ft of torque.

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