RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 mercedes-benz-gls-class--166---2017-2019--gls-63-amg-esr3017727 8L Stock Performance:

8L Stock Performance:

CLASS S LONG (W 221) 350 V6 Blue Efficiency (HP: 306 | Year: 11 > )

RENNtech Reverse Spare Mount for the W463 G-Class

in addition to

Power kW 491

RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 mercedes-benz-gls-class--166---2017-2019--gls-63-amg-esr3017727 8L Stock Performance:RENNtech ECU Upgrade for 207 E 350. Up to 290HP and 278 LB FT. Gains: +22HP & 20 LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software