RENNtech ECU Upgrade for E 320 (W211- 225 HP / 240 LB-FT) mercedes-benz-cl-class--215---2001-2006--cl-55-amg-esr2602602 which provide an aerodynamically efficient

which provide an aerodynamically efficient airflow path from the filter to the turbos

Gains: +30HP & +24LB-FT

CLASS E (W 211) 500 V8 4-matic [2 Filters Required] (HP: 388 | Year: 06 > 09)

Rated by Mercedes-Benz:      577 HP @ 5

RENNtech ECU Upgrade for E 320 (W211- 225 HP / 240 LB-FT) mercedes-benz-cl-class--215---2001-2006--cl-55-amg-esr2602602 which provide an aerodynamically efficientRENNtech ECU Upgrade for 210 E 320, up to 225HP and 240LB FT. Gains: +10HP & 11LB 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