RENNtech ECU Upgrade S 600 (W221- 625 HP / 745 LB-FT) mclaren-650-s--2014-2017--v8-biturbo-esr2864015 This combination allows for a

This combination allows for a greater volume of incoming air to the engine to maximize performance across the vehicles entire power band and is good for an additional 30 hp and 30 lb/ft of torque

Released in conjunction with our Hammer Debunked series

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

SL (R230) 65 AMG [2 Filters Required] (HP: 612 | Year: 04 >)

RENNtech ECU Upgrade S 600 (W221- 625 HP / 745 LB-FT) mclaren-650-s--2014-2017--v8-biturbo-esr2864015 This combination allows for aRENNtech ECU Upgrade for 221 S 600. Up to 625 HP and 745 LB FT. Gains: +115 HP & +133 LB 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