RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 745 HP +97 HP 767

745 HP +97 HP 767 LB-FT +54 LB-FT X167 - AMG GLS 63 R1 Package 773 HP +112 HP 788 LB-FT +75 LB-FT X167 - AMG GLS 63 R3 Package 875 HP +227 HP 873 LB-FT +160 LB-FT

BMC Air Filters: BMC air filters are designed to last longer and create more power than the OEM paper filters

Performance Package 2 Includes:

1 sec 136 mph *If not otherwise noted

R1 Performance Package for Maybach

RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 745 HP +97 HP 767ECU 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