*Professional installation required
Customized to your vehicle's modifications
Compatible with most all cars with the M113K engines: E55
-CNC Billet hard anodized coated *ZZ rated high speed Nachi bearings
flashes only when you want it
C63, E63, CLS63, CL63, ML63, GL63, GLE63, G63, S63 AMG M157 ECU Tune Torque Converter *Professional installation requiredM157 RaceIQ ECU tune. Compatible with most all cars with the M157 engine: C63, E63, CLS63, CL63, ML63, GL63, GLE63, G63, S63 AMG Dyno tested Better throttle response Customized to your vehicle modifications Instant power gains Top speed governor removed Optimized timing and fueling maps Flash tune within the comfort of your own garage via the OBDII diagnostic port of your vehicle using My Genius handheld programmer Gains +120hp & +180ft lbs tq on