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RENNtech ECU Upgrade for S 550 | W221 | 402 HP / 405 LB-FT | MY2007-2010 hsm Fuel Management System

$747.50

Quantity
Description

Fuel Management System

FL and manufactured in Germany

627 LB-FT @ 2

We have found the M276 engine stock performance numbers vary from the baseline figures claimed by Mercedes-Benz

RPM for Audi 4

RENNtech ECU Upgrade for S 550 | W221 | 402 HP / 405 LB-FT | MY2007-2010 hsm Fuel Management SystemRENNtech ECU Upgrade for 221 S 550. Up to 402HP and 405 LB FT. Gains: +20HP & 14 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 software

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