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

All tuning products and services sold by this store are intended strictly for off-road and track use only. By purchasing and/or using any of our tunes, you acknowledge and agree to the following:

These products are not designed for use on public roads or highways.

The use of performance tuning may affect your vehicle’s emissions compliance and could violate local, state, or federal laws.

We make no guarantees that any vehicle modified with our tunes will pass emissions testing or inspections.

The customer assumes all responsibility for ensuring compliance with applicable laws and regulations in their area.

We are not responsible or liable for any emissions-related issues, engine damage, mechanical failure, or other problems that may result from the use or misuse of our tuning products.

Use at your own risk.