RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 r-package though our tuning software and

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

Gains: +53HP & +67TQ

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

CLS 550 (W219) Stock Performance:

RENNtech ECU Upgrade E 350 | C207 | 290HP / 278 LB-FT | MY2010-2011 r-package though our tuning software andRENNtech 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