RENNtech ECU+ Upgrade | W221 | S 550 | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2013 jaguar-f-type--152--svr--2015-2020--esr6713313 With the proprietary RENNtech ECU+

With the proprietary RENNtech ECU+ Tuning the W205 - C 63 AMG gains up to +56 HP and +107 LB-FT

Our numbers will be dependend on conditions and fuel quality

With the proprietary RENNtech ECU Tuning the W213 - E63 AMG S 4MATIC+ gains up to +82 HP and +84LB-FT

Comparing to alternative product

RENNtech Pre-Preg Carbon Fiber Rear Deck Lid Spoiler for the 221 - S Class

RENNtech ECU+ Upgrade | W221 | S 550 | 540HP / 705 LB-FT | 4.7L V8 BiTurbo | M278 | MY2011-2013 jaguar-f-type--152--svr--2015-2020--esr6713313 With the proprietary RENNtech ECU+ECU+ Upgrade 540HP 705LB FT Gains: +92HP +167LB FT RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be