RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 R1 Performance Package for Maybach

R1 Performance Package for Maybach

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

Front Splitter:

RENNtech ECU Upgrade for 219 - CLS 550

which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's

RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 audi-sq5--2009-2017--2-0l-tfsi-i4-esr7061777 R1 Performance Package for MaybachECU 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