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59 mph X253 - GLC63 AMG SUV Rt ECU+ Upgrade w/Launch Control 3
Crank Performance Numbers are calculated with a 12% Drivetrain loss on the AMG GT
fall off or fade when mounted to the exterior of their vehicle after six months or while driving at high speed
Bolt-On System
Porsche Cayenne (92A | MY2011-18)
RENNtech ECU Upgrade | Bentley Continental Flying Spur Speed | 640HP/575LB-FT mercedes-benz-gl-class--166---2013-2016--gl-63-amg-biturbo-4matic-esr3783563 59 mph X253 - GLC63RENNtech ECU Upgrade for Bentley Continental Flying Spur Speed. Up to 640HP 575LB FT Gains: +40HP & +22LB FT Our proprietary Bentley ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our
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