RENNtech ECU Upgrade 535i/ix LCI E60 (2006-2009 Manual & Steptronic N54B30) porsche-911--997-1---2004-2008--gt3-esr8805972 648 HP 713 LB-FT X167

648 HP   713 LB-FT   X167 - AMG GLS 63 ECU Upgrade

yet highly functional aesthetic

pulling the car to the ground for enhanced down force and stability at speed

5 Series TOURING (E61) 525 i/Xi (HP: 218 | Year: 07 > 10)

RENNtech ECU Upgrade 535i/ix LCI E60 (2006-2009 Manual & Steptronic N54B30) porsche-911--997-1---2004-2008--gt3-esr8805972 648 HP 713 LB-FT X167RENNtech ECU Upgrade 535i ix LCI E60 (2006 2009 Manual & Steptronic N54B30). Up to 420 HP + 435TQ. Gains: +120 HP & +135 TQ. 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,