RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 r-package GLS 580 EQ Boost (MY2021+

GLS 580 EQ Boost (MY2021+ | X167 | M176 | 4

We have found the new M177 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

though our tuning software and approach for the Rolls Royce Wraith is completely unique and independent from our Mercedes tuning program

and BMC Air Filters

911 - 996 CABRIOLET 3

RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 r-package GLS 580 EQ Boost (MY2021+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