RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 339 LB-FT @ 2700 RPM

339 LB-FT @ 2700 RPM

Performance Package 2 Includes:

This four-piece Front Splitter is 100% pre-preg carbon fiber and developed to complement the full RENNtech AMG GT63 aerodynamic program

Front Splitter:

This entire cartridge is then fine balanced as a complete assembly to safely allow for these increases

RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 339 LB-FT @ 2700 RPMECU Upgrade 500HP 625LB FT Gains: +26HP +59LB FT RENNtech tuning products are certified to meet CARB standards in all 50 States. Our intermediate level ECU upgrade for the Mercedes M278 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline