Ultimate9 EVC451 Ultimate Performance EVC Throttle Controller featuring 4 driving modes and 20 tuning settings, adjust your throttle response to suit your specific needs. Easily installed in under 15 minutes, the EVC is the DIY mechanic's solution to throttle lag; customisable for any driving terrain or situation, whether you're on the highway or off the beaten track. The EVC provides new points of reference for your vehicle's throttle mapping, modifying the torque request that is sent to the throttle tables in your vehicle's Engine Control Unit (ECU). As a result, the throttle is activated faster, ultimately reducing throttle lag and enhancing throttle response. Installation: The EVC is easily installed by the at-home mechanic in less than 15 minutes; simply connect in-line between the factory plug and throttle pedal assembly. The EVC driver interface can be placed on the vehicle's dash or console. Specifications: Digital Display: LED, Ultimate Mode: 9 levels, Eco Mode: 9 levels, Automatic Control Mode: 1 level, Factory Mode: 1 level. Compatible with Mercedes-Benz E-Class 2003 - 2009 (W211).