: 045 99 48 775GL - 166 (2013-2015)
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RENNtech R1 Pkg | X166 | GL63 AMG | SUV | 696 HP / 801 LB-FT | M157 | 5.5L V8 BiTurbo | MY2013-15
R1 includes: ECU Upgrade, Diverter Valve and Air Filters | Gains: +122HP; +178 LB-FT -
RENNtech ECU+ Upgrade | GL 550 | BiTurbo 4.7L V8 | X166 | 540 HP / 705 TQ | M278 Engine
ECU+ Upgrade | 540HP / 705LB-FT | Gains: +92HP / +167LB-FT -
RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605TQ | 4.7L BiTurbo | M276 Engine
ECU Upgrade | 480HP / 605LB-FT | Gains: +32HP / +67LB-FT -
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