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If the stock system has integrated exhaust valves (the Porsche sport exhaust)
side skirts
Weight optimization and developed specifically for the Mercedes-Benz 166 - GLE/ML63 AMG
The Performance Series is the culmination of this extensive knowledge
Rated by RENNtech: 540 HP @ 4
RENNtech ECU Upgrade | Bentley Continental GT Speed | 620HP/560LB-FT porsche-cayenne--92a---2011-2018--3-6-l-naturally-aspirated-v6-esr2397612 If the stock system hasRENNtech ECU Upgrade for Bentley Continental GT 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 proprietary