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Plus shipping, applicable import duty and installation.
RENNtech M157 Biturbo ECU Upgrades are TÜV approved!
Our proprietary ECU upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.
Our ECU tune offers the biggest performance gains on the market; increasing performance to an astonishing 669 HP and 734 lb/ft at the crank! This allows the M157 engine to run the quarter mile in an impressive 11.37 seconds at 125.01 mph with 0-60 mph coming in a mere 3.4 seconds.
S 63 (W221) M157 Bi Turbo-Stock Performance (Non Performance Package):
S 63 (W221) M157 Bi Turbo-Stock Performance (With Performance Package):
Modified Performance (Non Performance Package):
Modified Performance (With Performance Package):
Our online store allows you to choose the best performance parts for your car. Instead of having the items delivered to your home, we can deliver direct to your local service center. You can browse products on this website. Please feel free to place an order and one of our representatives will contact you to arrange delivery and installation if requested of your new performance parts.