RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) porsche-911--991-2---2015-2019--carrera-esr9339334 0L V8 BiTurbo) Modified Performance:

0L V8 BiTurbo)  Modified Performance:

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

443 LB-FT @ 2

156 - GLA-Class | MY2014+

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

RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) porsche-911--991-2---2015-2019--carrera-esr9339334 0L V8 BiTurbo) Modified Performance:RENNtech 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