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and therefore the volume of the "blow-off" sound
The Evolution system is notably louder than the Slip-On
650 HP @ 7250rpm / 500 LB-FT @ 3000-7000rpm
The Mercedes-AMG S 63 (W222) is powered by the latest V8 BiTurbo -engine developed by AMG
RENNtech ECU Upgrade for S 65 (W221- 670 HP / 840 LB-FT) maserati-mc20-esr2615562 and therefore the volume ofRENNtech 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
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