M177 RaceIQ ECU Tune. Compatible with most all cars with the M177 engine: C63, E63, CLS63, CL63, ML63, GL63, GLE63, G63, S63, GT AMG
- Dyno tested
- Better throttle response
- Customized to your vehicle's modifications
- Instant power gains
- Top speed governor removed
- Optimized timing and fuel maps
- Gains 80hp & 80ft/lbs tq on stock engine