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Factory 503 HP / 505 lb-ft
this complete system includes stainless steel downpipes
Reprogrammed Vanos control for maximum drivability
EVERY BMW F1X M5/M6 TUNE INCLUDES:
a mid X-pipe
Mercedes Benz SL550 ECU Tune Bentley Factory 503 HP / 505Tuned by Alex Gintani himself, Gintani Tunings ECU Software is guaranteed to give you more horsepower, torque, and a more exhilarating driving experience by delivering usable power through improved throttle response and torque management. With additional ft. lbs. of torque through the mid range, acceleration out of your favorite corner and onto the straight is noticeably quicker throughout the rev range. Gintani saves your stock factory ECU settings
