RENNtech HHT ECU Upgrade for G 550 (W463- 402 HP / 405 LB-FT) mercedes-benz-e-class-sedan--211---2003-2009--e63-amg-esr3705573 Finished off in a high-gloss

Finished off in a high-gloss UV protectant coating and assembled with custom Titanium hardware

CLASS E COUPE' (C 207) 500 V8 [2 Filters Required] (HP: 388 | Year: 09 > )

This type of tooling has optimal durability

CLASS C (W 203) 230 Kompressor 2

The software retains the audible tone or steering wheel vibration

RENNtech HHT ECU Upgrade for G 550 (W463- 402 HP / 405 LB-FT) mercedes-benz-e-class-sedan--211---2003-2009--e63-amg-esr3705573 Finished off in a high-glossRENNtech ECU Upgrade for 463 G 550. Up to 402HP and 405LB FT. Gains: +20HP & 14LB 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