RENNtech ECU Upgrade X5 E70 (2008-2011- N73N2 35d Steptronic Diesel) mercedes-benz-cls-class--219---2006-2011--cls-550-esr9083602 The Euro-Style Bumper Insert is

The Euro-Style Bumper Insert is easy to install and uses factory fasteners in the existing holes of the OEM bumper

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The Performance Series is the culmination of this extensive knowledge

RENNtech ECU Upgrade X5 E70 (2008-2011- N73N2 35d Steptronic Diesel) mercedes-benz-cls-class--219---2006-2011--cls-550-esr9083602 The Euro-Style Bumper Insert isRENNtech ECU Upgrade X5 E70 (2008 2011 N73N2 35d Steptronic Diesel). Up to 346 HP + 480 TQ. Gains: +81 HP & +55 LB FT Our proprietary BMW 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