M276 RaceIQ ECU tune. Compatible with most all cars with the M276 engine: C43 AMG, C450 AMG, E43 AMG, E450 AMG, C400, E400
- Dyno tested
- Better throttle response
- Customized to your vehicles modifications
- Instant power gains
- Top speed governor removed
- Optimized timing and fuel maps
- Gains about 39hp & 59ft/lbs tq on stock engine