RENNtech HHT-Hand Held Tuner | ECU Upgrade | R199 | SLR McLaren | 675 HP / 646 LB-FT | M155 | 5.5L V8 Supercharged mercedes-benz-sls-amg--197---2011-2014--sls-black-series--2014--esr5166974 CLASS E (W 211) 280

CLASS E (W 211) 280 V6 [2 Filters Required] (HP: 231 | Year: 05 > 09)

RENNtech Digital Lowering Module for Rolls Royce

No drilling or modifications to the trunk are necessary

Please specify at time of order

Dyno measured by RENNtech (peak @crank):          339 HP @ 5

RENNtech HHT-Hand Held Tuner | ECU Upgrade | R199 | SLR McLaren | 675 HP / 646 LB-FT | M155 | 5.5L V8 Supercharged mercedes-benz-sls-amg--197---2011-2014--sls-black-series--2014--esr5166974 CLASS E (W 211) 280The RENNtech ECU Plus Upgrade brings the SLR McLaren up to 675 HP and 646 LB FT Gains: +47 HP and +25 LB FT. RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU.