Recently, we just finished finalizing data for the all new 4.6L twin turbo engine that resides in the ML, E, S, CL, CLS, and SL class of the Mercedes Benz lineup. After perfecting the software for the 2012+ 63 AMG’s early last year (January 2011), we believed the 550′s could benefit instead of gaining the 60hp 80lbs tq we originally achieved. The end result you might ask…well astonishing to say the least. Through reprogramming of the ECU, we take nearly every 550 class Mercedes to 515hp & 619lbs tq, and it doesn’t stop there. Along with a tune, all hesitation/flatspots are removed, speed limiter is eliminated, volume is raised in 2nd and 3rd gear, and shifting is smoother all while increasing fuel economy.

Gains:

ML550, CLS550, E550 – 113hp & 176lbs tq

S550, SL550, CL550 – 86hp & 103lbs tq


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Has anyone in the group modified their ECU and your experience