With our proprietary tune the M139 engine gains up to +150HP and +150LB-FT, based on power numbers generated by client vehicles on a dynomometer. Please note that the Mercedes M177 engine performance when measured, obtains higher numbers than rated from factory.

• Octane specific tuning
• CEL removal for catless downpipes
• ‍‍Top speed limiter removal
• Optional pops and bangs

‍