RENNtech ECU Upgrade 135i E82 (2008-2010 Manual & Steptronic N54B30) bmw-m5--e60-e61---2005-2010--esr9425365 RENNtech ECU Upgrade for 172

RENNtech ECU Upgrade for 172 - SLK 350 BlueEFFICIENCY

466wtq @ 2

+59 HP / +53 LB-FT

2020+ C118 CLA 45

RENNtech ECU Upgrade 135i E82 (2008-2010 Manual & Steptronic N54B30) bmw-m5--e60-e61---2005-2010--esr9425365 RENNtech ECU Upgrade for 172RENNtech ECU Upgrade 135i E82 (2008 2010 Manual & Steptronic N54B30). Up to 420 HP + 435 TQ. Gains: +120 HP +135 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