M278 Engine Tune

2026-04-21T01:05:28-07:00

Price: 750.00

Our M278 ECU tune for Mercedes-Benz vehicles unlocks the true performance of the 4.7L twin-turbo V8. In Stage 1 form, the M278 produces approximately 507 HP and 604 TQ (820 Nm), delivering a noticeable improvement in power, throttle response, and overall drivability.

With advanced setups including hybrid turbos (M157-based), upgraded high-pressure fuel systems, and methanol injection, builds can exceed 800 HP while still maintaining daily drivability when properly tuned.

Please contact us if you have any specific requests