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 OUT OF STOCK 77-16409Automobiles in the 21st century have replaced the more conventional throttle cable technology for an ECM (Electronic Control Module) that translates pedal travel into electronic signals in order to provide power to the wheels. The ETC system (Electronic Throttle Control) – also known as drive-by-w... aFe Power Sprint Booster Power Converter Audi A4/S4/RS4/A5/S5/RS5/A6/S6/RS6 08-15 2008-2008 Audi S4 Avant / Base 2008-2009 Audi S4 Cabriolet 2010-2013 Audi S4 Base 2014-2016 Audi S4 Premium Plus / Prestige $297.00 |