PPE M849X ECU for Mercury 300 Drag Horn Intake
The Power Performance Engineering M849X tuned ECU for the Mercury Racing 300 Drag EFI outboard with horn intake.
**Requires 56 PSI Fuel Pressure Regulator**
Includes Dynamometer calibrated fuel curve for optimum power and fuel economy.
Please let us know your cover color when ordering: Red, Blue, Black or Silver.