RENNtech ECU Upgrade for E 320 (W211- 225 HP / 240 LB-FT) mercedes-benz-s-class--222---2018-2020--s450-biturbo-esr1451600 664 LB-FT @ 3

664 LB-FT @ 3

With the RENNtech ECU Plus Upgrade the R199 - SLR McLaren gains up to +47 HP and +25 LB-FT

The RENNtech Stage II Turbo Upgrade comes with an RENNtech ECU Upgrade

and an unbelievable change in engine sound thanks to this Akrapovič Slip-On exhaust system

413 HP / 422 LB-FT

RENNtech ECU Upgrade for E 320 (W211- 225 HP / 240 LB-FT) mercedes-benz-s-class--222---2018-2020--s450-biturbo-esr1451600 664 LB-FT @ 3RENNtech 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