Mercedes Benz CLS63s AMG ECU Tune Stage:Stage 1 +127hp +240Tq If you ship it via

If you ship it via Overnight

Built in-house from premium 304 stainless steel and hand TIG welded

Crafted in the USA

The ECU will be tuned the same day it is received and Gintani will then ship back the ECU using whatever method it was shipped in with

Power ratings are subject to conditions and dynamometer model used

Mercedes Benz CLS63s AMG ECU Tune Stage:Stage 1 +127hp +240Tq If you ship it viaTuned by Alex Gintani himself, Gintani Tunings ECU Software is guaranteed to give you more horsepower, torque, and a more exhilarating driving experience by delivering usable power through improved throttle response and torque management. With additional ft. lbs. of torque through the mid range, acceleration out of your favorite corner and onto the straight is noticeably quicker throughout the rev range. Gintani saves your stock factory ECU settings