RENNtech ECU Upgrade M276

RENNtech M276 Biturbo ECU Upgrades are TÜV approved!

Our proprietary ECU upgrade for the Mercedes M276 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 with our dyno results increasing performance from 329 HP and 354 lb/ft torque, up to an astonishing 392 HP and 432 lb/ft at the crank!

CLS 400 BiTurbo (C218 - M276 Biturbo 4-MATIC Engine) Stock Performance:

• 329 hp @ 5,250-6,000 RPM; 354 lb-ft @ 1,600-4,000 RPM

• Note: Mercedes M276 engine performance when measured obtains higher numbers that rated from factory.

CLS 400 BiTurbo (C218 - M276 Biturbo 4-MATIC Engine) Modified Performance:

• 392 hp @ 5,800 RPM; 432 lb-ft @ 3,110 RPM