RENNtech Smart Car ECU Upgrade (69HP/66LB-FT) porsche-911--992---2018-present--carrera-gts---cabriolet-esr6371504 5 Series TOURING (E61) 525

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

Easy installation

Created using state-of-the-art 3D CAD programs and analysis tools with multiple levels of revisions to refine the product and achieve an OEM level of quality and fitment

Stainless Steel Downpipes

836 LB-FT @ 3500 RPM

RENNtech Smart Car ECU Upgrade (69HP/66LB-FT) porsche-911--992---2018-present--carrera-gts---cabriolet-esr6371504 5 Series TOURING (E61) 525RENNtech Smart Car ECU Upgrade. Up to 69HP and 66LB FT. Gains: +5HP & +5LB FT Our proprietary SMART 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 proprietary tuning software and