RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) porsche-911--991-2---2015-2019--carrera-esr9339334 Whether it’s a small deviation

Whether it’s a small deviation in the weave layup or a slight inconsistency in the finish

With the proprietary RENNtech ECU Upgrade the W166 - GLE AMG SUV gains up to +25 HP and +42 LB-FT

Please Note: Vehicles without factory fixed rear wing will require MB OEM wing base and Spoiler Deactivation module

The impeller and turbine housings are then precision CNC machined and flow tested in-house to fit the larger internal cartridge

443 LB-FT @ 2

RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) porsche-911--991-2---2015-2019--carrera-esr9339334 Whether it’s a small deviationRENNtech ECU Upgrade for 221 S 65 AMG. Up to 670HP and 840TQ. Gains: +49HP & +102LB 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