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RENNtech ECU Upgrade for 221 - S 550
we also made them larger (90mm diameter)
CLK CABRIOLET (A 209) 280 V6 [6 gear] [2 Filters Required] (HP: 231 | Year: 05 > 10)
Rated by Mercedes-Benz: 577 HP @ 5
creating low pressure areas that act like a vacuum
RENNtech ECU Upgrade | Rolls Royce Wraith | 712HP/774LB-FT mercedes-benz-amg-gt--190---2018-present--gt--2018-present--esr3206634 RENNtech ECU Upgrade for 221RENNtech ECU Upgrade for Rolls Royce Wraith. Up to 712 HP 774 LB FTGains: +95HP & +90LB FT Our proprietary Rolls Royce ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our tuning software