RENNtech ECU+ Upgrade | R231 | SL 63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 The Exhaust Valve Module allows

The Exhaust Valve Module allows you to fully open the exhaust valves of the AMG Sport Exhaust by pressing Button 1 on the remote control

695 LB-FT @ 3

Aston Martin Vantage V8 (MY2017+)

2024+ W223 Chassis

No permanent modifications to the vehicle are required

RENNtech ECU+ Upgrade | R231 | SL 63 AMG | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 The Exhaust Valve Module allowsECU+ Upgrade Up to 669HP 734TQ Gains: +106 HP +140TQ 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